New Exhaust - More Power

[Nickccc]

Very nice Jules,
Any chance I could get one of these? You are going to get a batch made up yes? Don't mind chipping in if needed.
I would have thought mine will push 430 now, only need 4-5 BHP and it's there.

As you know I have had the short pipes fitted now. Just back from Brighton, It is a lot smoother again, the humps are gone and my power delivery is a lot less spiky, much easier to just floor it. Though finding somewhere to give it a blast without fear of my licence selfe distructing is proving hard.
I will be going to Santapod on the 1st July to see if I can better my time of 12.4
See you there.
NIck

[itsallyellow]

id be very intrested in the exhaust aswell. Have you thought about going completly straight through?? or would to much mid range be lost?

[SXS]

Cyclone1 said:

Some of you will have read from my post last week that I have had a new exhaust system made for my Cerb. At the moment I have only had the back section fitted (from intermediate pipes back as per Sports Exhaust), I have had it made in 2.5" into the back boxes and 3" all the way tail pipes. My car went on the Joolz'z rolling road last week at TCS and put out:

407.4bhp and 379lb/ft (has consistently been between 406 and 410bhp since short induction and linked de-cats were fitted).

Now it has produced:

420.4bhp and 389lb/ft

Am I happy................you bet!!!!!!!!!!!!

It has gained between 5-15bhp (mainly 10-15)and 5-20lb/ft all the way through the rev range.

Here's the graph with the two runs overlayed, pre exhaust in purple, post exhaust in red.



We have a couple more mods to finish, the first being the bigger bore intermediate pipes which should liberate a few more ponies, and then another which I'll let you know about after we have tested it.

I'd be suprised if there is a Cerb out there that can match this sort of power and torque throughout the rev range (Boss Cerb excluded).

I love this tuning lark............

Jules.

ps.......I now have a Cerb as it should have been when it left the factory.

Edited by Cyclone1 on Saturday 24th June 09:50

Nice pics cyclo, my old sport-pipes from Hawthorns looked similar. That dyno-plot is smooth as a babys arse! impressed

420bhp? damn, thats not bad at all.... so let me get this right, you're getting that power from a regular CR 4.5 with just the external mods and mapping? btw is that power-run done on 1:1 gearing?

You mentioned 'Boss Cerb excluded', has his ride hit anyones dyno yet? comparing that 5litre chart against your 4.5 would be interesting...
The Nitrous Cerbie's plot is coming soon too after the mapping, hopefully get a good collection of charts from all the power-hungry boys up here to get an idea of what all the beasts are pulling... mind you, so many are just selling their rides on to tighter pockets so doubt much out there are gonna be kicking more out of their cerbs *cough* bar NickCCC of course

[Cyclone1]

simonsparrow said:

Great results and nice power curve. Are your back boxes the same as 'normal' sports exhausts? i.e. cylindrical in section?

Yes they are approximately the same dimension.

Jules.

[Cyclone1]

Nickccc said:

Very nice Jules,
Any chance I could get one of these? You are going to get a batch made up yes? Don't mind chipping in if needed.
I would have thought mine will push 430 now, only need 4-5 BHP and it's there.

As you know I have had the short pipes fitted now. Just back from Brighton, It is a lot smoother again, the humps are gone and my power delivery is a lot less spiky, much easier to just floor it. Though finding somewhere to give it a blast without fear of my licence selfe distructing is proving hard.
I will be going to Santapod on the 1st July to see if I can better my time of 12.4
See you there.
NIck

Hi Nick,

If there is enough genuine interest then I will do all I can to get them to make a few sets up.

I've seen your graphs and they are so much smoother with the Whirlwind pipes, good to hear that it translates the smoothness onto the road.

I'll hopefully be at SP on July 1st, so may see you down there.

Jules.

[Cyclone1]

itsallyellow said:

id be very intrested in the exhaust aswell. Have you thought about going completly straight through?? or would to much mid range be lost?

The noise would be way too loud and it would also run the risk of resonating badly throughout the car.

Jules.

[Cyclone1]

SXS said:

Nice pics cyclo, my old sport-pipes from Hawthorns looked similar. That dyno-plot is smooth as a babys arse! impressed

420bhp? damn, thats not bad at all.... so let me get this right, you're getting that power from a regular CR 4.5 with just the external mods and mapping? btw is that power-run done on 1:1 gearing?

You mentioned 'Boss Cerb excluded', has his ride hit anyones dyno yet? comparing that 5litre chart against your 4.5 would be interesting...
The Nitrous Cerbie's plot is coming soon too after the mapping, hopefully get a good collection of charts from all the power-hungry boys up here to get an idea of what all the beasts are pulling... mind you, so many are just selling their rides on to tighter pockets so doubt much out there are gonna be kicking more out of their cerbs *cough* bar NickCCC of course

Cheers Ash, the power run has been done exactly the same as all of the other runs that I have had done, this gives me consistency and accurate comparison depending on what has been done with the car. All of the other Cerbs that hit this dyno are tested under the same conditions.

I always exclude the Boss Cerbera car as it is an outright special car, it also has a "different" engine, in that it isn't a 4.5, I am always curious to know what power each car is putting out, but with this one I am not too fussed, it's special full stop and has proved itself in "Autocar(I think)". If it ever hit the rollers then yes it would be great to compare the curves. As for Craig's Nitrous Cerb then I am sure that this is going to be big, big power with the nitrous plumbed in.

Jules.

[HarryW]

Mucho impressive result/plot there . Is it still on the original headers/manifolds . If so then to get those kind of gains just for the rest of the exhaust is even more impressive, which in its self, bodes well for further gains to be had .
Love the shape and levels of the Torque curve in particular .

[scania164]

Cyclone1 said:

Some of you will have read from my post last week that I have had a new exhaust system made for my Cerb. At the moment I have only had the back section fitted (from intermediate pipes back as per Sports Exhaust), I have had it made in 2.5" into the back boxes and 3" all the way tail pipes. My car went on the Joolz'z rolling road last week at TCS and put out:

407.4bhp and 379lb/ft (has consistently been between 406 and 410bhp since short induction and linked de-cats were fitted).

Now it has produced:

420.4bhp and 389lb/ft

Am I happy................you bet!!!!!!!!!!!!

It has gained between 5-15bhp (mainly 10-15)and 5-20lb/ft all the way through the rev range.

Here's the graph with the two runs overlayed, pre exhaust in purple, post exhaust in red.



We have a couple more mods to finish, the first being the bigger bore intermediate pipes which should liberate a few more ponies, and then another which I'll let you know about after we have tested it.

I'd be suprised if there is a Cerb out there that can match this sort of power and torque throughout the rev range (Boss Cerb excluded).

I love this tuning lark............

Jules.

ps.......I now have a Cerb as it should have been when it left the factory.

Edited by Cyclone1 on Saturday 24th June 09:50

Be suprised Cyclone daggart's gives more.Get yours down to Austec and get an independant check done!!.

[Cyclone1]

scania164 said:

Cyclone1 said:

Some of you will have read from my post last week that I have had a new exhaust system made for my Cerb. At the moment I have only had the back section fitted (from intermediate pipes back as per Sports Exhaust), I have had it made in 2.5" into the back boxes and 3" all the way tail pipes. My car went on the Joolz'z rolling road last week at TCS and put out:

407.4bhp and 379lb/ft (has consistently been between 406 and 410bhp since short induction and linked de-cats were fitted).

Now it has produced:

420.4bhp and 389lb/ft

Am I happy................you bet!!!!!!!!!!!!

It has gained between 5-15bhp (mainly 10-15)and 5-20lb/ft all the way through the rev range.

Here's the graph with the two runs overlayed, pre exhaust in purple, post exhaust in red.



We have a couple more mods to finish, the first being the bigger bore intermediate pipes which should liberate a few more ponies, and then another which I'll let you know about after we have tested it.

I'd be suprised if there is a Cerb out there that can match this sort of power and torque throughout the rev range (Boss Cerb excluded).

I love this tuning lark............

Jules.

ps.......I now have a Cerb as it should have been when it left the factory.

Edited by Cyclone1 on Saturday 24th June 09:50

Be suprised Cyclone daggart's gives more.Get yours down to Austec and get an independant check done!!.

I was waiting for this. Daggart's car has proved itself on the rollers at Surrey Rolling Road at 430bhp, this is a fantastic achievement and bodes well so far in the quality of the rebuild with all of the "upgraded parts" used, I can only applaud this, it is a fantastic result.

What I was saying was that through the rev range my power and torque curves are very strong, and from the other graphs I have seen so far, none are as good, maybe at peak, but elsewhere lagging behind. if you have the SRR graph for Daggart's car then by all means post it for comparison, if it's stronger then I stand corrected.

Jules.

[scania164]

Get Vixpy1 to print a graph off for you.

If its all out power you want then theres more to come from daggarts Cerb.The fact is my brothers car is so drivable now from the mapping and other parts mucking around with it just to squeeze out a bit more would probably make the car harder to live with day to day.As it is the car so bloody quick!,makes my Tusacn feel a bit lame.

The other day i watched my brother slaughter a tuned R34 Skyline from a set of lights in Portsmouth,the guy looked devestated once we'd stopped to let him catch up!!!.

[Cyclone1]

scania164 said:

Get Vixpy1 to print a graph off for you.

If its all out power you want then theres more to come from daggarts Cerb.The fact is my brothers car is so drivable now from the mapping and other parts mucking around with it just to squeeze out a bit more would probably make the car harder to live with day to day.As it is the car so bloody quick!,makes my Tusacn feel a bit lame.

The other day i watched my brother slaughter a tuned R34 Skyline from a set of lights in Portsmouth,the guy looked devestated once we'd stopped to let him catch up!!!.

If Vixpy1 wants to post a graph then I am sure he'll be along at some stage to do so.

I am sure that Daggart's car is superb as it is and yes I would agree that it probably has more potential.....maybe the next owner will take it to yet another level, although as it is, it is more than most could ever want.

Jules.

[dean_ratpac]

jules, so is this zaust gonna be available to buy?

[SXS]

Cyclone1 said:

SXS said:

Nice pics cyclo, my old sport-pipes from Hawthorns looked similar. That dyno-plot is smooth as a babys arse! impressed

420bhp? damn, thats not bad at all.... so let me get this right, you're getting that power from a regular CR 4.5 with just the external mods and mapping? btw is that power-run done on 1:1 gearing?

You mentioned 'Boss Cerb excluded', has his ride hit anyones dyno yet? comparing that 5litre chart against your 4.5 would be interesting...
The Nitrous Cerbie's plot is coming soon too after the mapping, hopefully get a good collection of charts from all the power-hungry boys up here to get an idea of what all the beasts are pulling... mind you, so many are just selling their rides on to tighter pockets so doubt much out there are gonna be kicking more out of their cerbs *cough* bar NickCCC of course

Cheers Ash, the power run has been done exactly the same as all of the other runs that I have had done, this gives me consistency and accurate comparison depending on what has been done with the car. All of the other Cerbs that hit this dyno are tested under the same conditions.

I always exclude the Boss Cerbera car as it is an outright special car, it also has a "different" engine, in that it isn't a 4.5, I am always curious to know what power each car is putting out, but with this one I am not too fussed, it's special full stop and has proved itself in "Autocar(I think)". If it ever hit the rollers then yes it would be great to compare the curves. As for Craig's Nitrous Cerb then I am sure that this is going to be big, big power with the nitrous plumbed in.

Jules.

Fair enough, no point bringing the old "which way to use a dyno is best argument"... will be interesting to see what difference the extra horses makes on the strip.... hitting anytime soon? Listen mate, if you crack 11.5 in your NA cerbie, I'll want a copy of the slip to frame up! Pub bragging rights galore!

In respects to 'special' cars, I hear what you're saying, but bottom line is if theres no dyno chart from any of the well-known-and-used indie rolling roads then I dont see how its feasible to consider it in the bhp stakes. A bit like the Speed 12, another 'special' car which has been rated highly by the racing drivers and mags and the public, but the competition would have loved to see her on the VW test ring and at least an indie bhp chart. Thats one thing the japs/aussies/yanks are good at - showing off their numbers and achievements by publically showing what they can do, be it drag-strip or rolling road. Thats one of the reasons why I have a lot of time and respect for your posts, you always back up what you have achieved with dyno-charts and tech talk. Keep it up!

I was well impressed with Daggart doing his run at SRR to show his baby wasnt just another myth and his pulled 430 on the day I think Craig is going to run his on the dyno without NOS (for safety reasons) to give a baseline of what the new build is doing, I think 250shot would easily eat up the drivetrain while strapped down, but on the open roads in progressive mode and plenty airflow she'll be a little safer ( still a feckin madman for running 250 through tuscan-racer high-comp heads skimmed even further! I heard he's banging in 10k's worth of drivetrain upgrades including an exotic sequential box )

[Steve_T]

Well I'm impressed by this mod, with torque gains everywhere, you can't argue with its effectiveness. Tim at ACT mentioned to me he'd had the same kind of results from his big bore system, so the only problem I can think of is saving your hearing!

Steve.

[Cyclone1]

dean_ratpac said:

jules, so is this zaust gonna be available to buy?

Hi Dean,

I am trying to pursuade the chaps who built mine to build some more. I reckon if I could get a least five definite buyers then they would hopefully go ahead. As soon as I know I'll post it up and email those who are interested.

Jules.

[Cyclone1]

SXS said:

[Fair enough, no point bringing the old "which way to use a dyno is best argument"... will be interesting to see what difference the extra horses makes on the strip.... hitting anytime soon? Listen mate, if you crack 11.5 in your NA cerbie, I'll want a copy of the slip to frame up! Pub bragging rights galore!


I was well impressed with Daggart doing his run at SRR to show his baby wasnt just another myth and his pulled 430 on the day I think Craig is going to run his on the dyno without NOS (for safety reasons) to give a baseline of what the new build is doing, I think 250shot would easily eat up the drivetrain while strapped down, but on the open roads in progressive mode and plenty airflow she'll be a little safer ( still a feckin madman for running 250 through tuscan-racer high-comp heads skimmed even further! I heard he's banging in 10k's worth of drivetrain upgrades including an exotic sequential box )

I may be at Santa Pod on Saturday depending on whether my friend has his car ready in time, if not then I will be travelling down on Sunday the 16th. It would be great to beat 11.9 and the extra power and torque should help.

Daggart's Cerb is proven at 430bhp and is a great achievement.

Craig's Cerb by the sounds of it will be another high powered Cerb, will be interested to see the results and would also be interested in the latest spec of his engine.

Jules.

[Cyclone1]

Steve_T said:

Well I'm impressed by this mod, with torque gains everywhere, you can't argue with its effectiveness. Tim at ACT mentioned to me he'd had the same kind of results from his big bore system, so the only problem I can think of is saving your hearing!

Steve.

Thanks Steve.

I looked at Tim's exhaust but wanted mine to be a touch larger bore (2.5 v 2.25), I honestly didn't expect to see any major gains, maybe 5bhp here and there, but to see upto 15bhp all the way along the curve was a great result. It does sound louder, but the noise is much deeper and I have got to admit that I prefer it.

Jules.

[Neilus]

Cyclone1 said:

dean_ratpac said:

jules, so is this zaust gonna be available to buy?

Hi Dean,

I am trying to pursuade the chaps who built mine to build some more. I reckon if I could get a least five definite buyers then they would hopefully go ahead. As soon as I know I'll post it up and email those who are interested.

Jules.

Jules,

If they say 'yeah' and you get an idea of cost, could you mail me the details. I may well be interested in these, as my current pipes have been welded up a couple of times.

Cheers,

Neil.

[Cyclone1]

Neilus said:

Cyclone1 said:

dean_ratpac said:

jules, so is this zaust gonna be available to buy?

Hi Dean,

I am trying to pursuade the chaps who built mine to build some more. I reckon if I could get a least five definite buyers then they would hopefully go ahead. As soon as I know I'll post it up and email those who are interested.

Jules.

Jules,

If they say 'yeah' and you get an idea of cost, could you mail me the details. I may well be interested in these, as my current pipes have been welded up a couple of times.

Cheers,

Neil.

Will let you know.