Mbe check over and latest emissions test

[ClassicChimaera]

ianwayne said:

Do you still have 2 return springs on the throttle lever next to the plenum?

I removed one of mine to make the throttle operation a bit softer / easier. I keep the second spring with me of course should the one break.

Yes I do.
This is where it gets complicated because I don't like it to easy either.
I might well try it and keeping the spring as a spare, blinding

I'll do the oil cabling first.
Thanks

[Sardonicus]

Nice clean results Alun shows the Cat functioning correctly too nothing wrong with running narrow band sensors so long as your happy with the low to midrange manners your all good most cars run open loop at anything over say 60/70% throttle/load anyways a correctly mapped car dont need full throttle/load fuel correcting/closed loop anyway they are generally mapped a tad rich up there nice and safe

[ClassicChimaera]

Yex 450 said:

Excellent update Alun, keep them coming

Will be calling Dom in the near future to get my MBE fitted and mapped by Jay now all the breathing improvements and new 885 cam have been installed. Not aiming for outright BHP but after seeing quite a few posts on here from you and other MBE users I'm expecting a smoother engine across the rev range in all temperatures and a useable slug of torque thrown in for good measure in the mid-range

Thanks Yex.

The diagnostics are the best bit really.
Something about these engines and the management always has you not so sure, this dismisses many silly thoughts of over heating and over fuelling.
I'm not about to start playing with the software and effecting a thing, why would I want to so for me the computer screen shots are a reassuring way to see what the Ecu sees and how it controls all these elements together.
I can pop tha laptop on the car, check things over, if anything changes I can be on the phone to Jason in a jiffy

It's like Ive now got that total reassurance and I truelly feel the cars engines 21st century in many ways.

The water temp staying solid at 88 degrees inside the building for what seemed like an hour, because you often see a marginal spike on the dash board read out when the fans kicked in I assumed the engines warming slightly but it's localised to that sensor I feel. Not sure if I'm right but the Ecu water sensor is running at a totally constant 88degrees when stationary with no deviation. It's started at 85degrees when I first Hooked the car up.
That's something I find very interesting.
You can go to a track, have a blast, plug in and check the real temps etc.
Brilliant insider information

[ClassicChimaera]

[quote=ClassicChimaera ]

And this is the thing to remember. Yes the cat is in good nick.

I'm so impressed with the Lambda's even control etc.
Wide band is going to give more info and better info, no question but the mapping and Ecu functions on these things are compensating very well.

I'm going to have lights on me windscreen the lot,, my grandson when I explained it like this,
Well son it's like a brand new computer that the F1 boys use,,, he's well Ito it and will love plugging and playing.
By having a small note book I can have the computer plugged in on the move, proper stuff this is.

Look at those emissions,,, it's just bonkers this is a very fast car. My wildest dreams couldn't imagine such a thing.

Here's the most telling thing I can say, I fill up the tank with good fuel.
Forget it for days and days before the fuel gauge has moved far.
Yet it's way faster if I push on.
I spend a lot less on petrol per mile and that's a bit of a game changer in its own right.

I'm in an equal car to almost all others around me when it comes to mapping and controllability. What a buzz that is.

I should shut up.
Once you get to know Jason, boy this is the real deal.

Edited by ClassicChimaera on Tuesday 10th January 14:00

[mk1fan]

ClassicChimaera said:

Idle was slightly to low so I adjusted the idle screw as directed.

Made little if any difference so I returned the screw to its original position,, 3/4 of a turn, well the screws turned in to far and it can only have been me.
I'm traumatised by such a basic error. FFS
IM ABOUT TO LOCTITE THE SCREW because I did not turn the screw 2 turns in!!!

I used a couple of turns of PTFE tape on the screw and a closed rubber gromet (12mm iirc) to plug the hole in the plenum. The ptfe helps hold it in place but still allows some adjustment. The gromet for classy looks.

ClassicChimaera said:

I did have fouling on the spark plugs.

Have you tried a 5 rated plug

[ClassicChimaera]

I'm just going to scribe the idle screw for now, make a mark and watch it.

5's hmmm does run cool at times

[Incognegro]

ClassicChimaera said:

Incognegro said:

I have no idea what those difference mean/equate to in use of the car but just thought I'd chip in with... my cerbera is going into Dom on Saturday for a knock MBE and some other tricks. I'll be using a Bluetooth OBDII reader as you suggest Matt which will be running realtime info on my android screen and the torque pro app (which I've been testing on my Range Rover and the info you get is great and easily customisable)

The best bit is the data logging feature so I'll let you know true 0-60s

Please come back and tell us how you get on.
I've seen all this today, sweets for blokes

For sure will do. I plan on running a youtube/external GoPro Video of the various 7 settings of launch control (Im having the TCS and Launch option added).I'll then be able to consistently hit times and let you know the fastest set. I'll be doing whats effectively a 4.0RR update but a little more as Im using not the standard S injectors but the larger from the 4.5 rebuilds (as Im prepping for Doms 4.7SS Final release). Then we are doing all other fancy things I won't say yet (I believe in marginal gains... extra 1% here, 1% there lol ) The MBE is crucial to all of this as its mapping efficiency really is something else added to Doms know how etc.



Sweets you say the image is a rough just of how the setup will look. taken a while ago as I made a few layout changes... more pics and info all to come.

[Incognegro]

Matthew Poxon said:

One day! Fingers crossed. ??

Glad to hear you are using your car Alun, that is what they are built for and sounds like you have been getting lots of enjoyment out of yours. Good on you. Looking forward to catching up this year at some point sir.

Good luck with you install Alistair, the latest MBE on your awesome cerb should be the icing on the cake. Good shout on the Bluetooth ODBII reader combined with an app, good solution and loads of accessories and apps available being the standard diagnostics port on all cars 2001 onward (I think). You can just leave the OBD unit plugged in and fire up the app on your smart phone whenever you want to look at the readings ??

Thanks Matthew. Hope all is well mate and your blue beauty is still gleaming. I think they could still be the best looking things in 2117.

Yeah its one Im really looking forward to. I was in the Rangey today then was passed and followed for a while the New Aston Vanquish S. Now I must say thats a car I would say LOVE too! It had the most smooth sounding tone now not as loud like my Cerb but beautiful. I look forward to having the MBE with as I hear its smoother tone of engine due to the sequential injection and detailed mapping. so I really cant wait. I'm also putting the Hi Torque Starter motor on as I always prefer the instant catch rather than either wait or half to full throttle. I mean it then just gives me more choice when I want to raise the dead... lol

[gacksen]

Performace wise i do get the point

for anything else if you care about planet earth buy a prius

[AdriaanB]

Great to hear the good stories on the MBE set-up - my next car investment will be a new ECU set-up for my Chimaera When you decided on MBE, did you also consider alternatives (such as Canems)?

[mk1fan]

I lot of those that have gone aftermarket with MBE have done so because Powers built their engines and Powers use MBE. In doing so warranties are maintained.

Clearly this is not the only reason but a common one.

Plenty of threads across the TVR forums on the various systems available and fitted to the various engines.

[QBee]

Alun, you have driven a car with one throttle return spring removed.

Mine.

I removed the second spring in 2013, 30,000 miles ago.
Much nicer throttle, IMHO. Much easier to be precise with it.
There is also a backup spring in the throttle mechanism, I think you will find, so your car has three.

[Matthew Poxon]

Incognegro said:

Thanks Matthew. Hope all is well mate and your blue beauty is still gleaming. I think they could still be the best looking things in 2117.

Yeah its one Im really looking forward to. I was in the Rangey today then was passed and followed for a while the New Aston Vanquish S. Now I must say thats a car I would say LOVE too! It had the most smooth sounding tone now not as loud like my Cerb but beautiful. I look forward to having the MBE with as I hear its smoother tone of engine due to the sequential injection and detailed mapping. so I really cant wait. I'm also putting the Hi Torque Starter motor on as I always prefer the instant catch rather than either wait or half to full throttle. I mean it then just gives me more choice when I want to raise the dead... lol

You are too kind sir, mine is looking a bit battered now after living outside many years. Respray may be on the cards in 2217 when if I finally get a garage.

New Vanquish certainly looks very nice indeed. I do love the newer style Astons (DB9, V8V onwards) I think they really nailed the styling retaining the classic features but still looking modern. You have to admit though most of the later TVRs and particularly the cerebra just look stunning and have not aged one bit. Owning a cerebra when it first come out must have been like owning a spaceship! The long and low stance with those huge doors looks so good.

The speed six cars running the new MBE do sound a bit smoother from what I remember, but I think the main improvement will be drivability which is something you can't really measure or define but you know when you drive it.

Looking forward to hopefully catching up next year sir

[SILICONEKID345HP]

Can someone explain what semi and full sequential injection means in plumbers terms.

Can I have fancy things like that connected to the Emerald ?

[ClassicChimaera]

Incognegro said:

For sure will do. I plan on running a youtube/external GoPro Video of the various 7 settings of launch control (Im having the TCS and Launch option added).I'll then be able to consistently hit times and let you know the fastest set. I'll be doing whats effectively a 4.0RR update but a little more as Im using not the standard S injectors but the larger from the 4.5 rebuilds (as Im prepping for Doms 4.7SS Final release). Then we are doing all other fancy things I won't say yet (I believe in marginal gains... extra 1% here, 1% there lol ) The MBE is crucial to all of this as its mapping efficiency really is something else added to Doms know how etc.



Sweets you say the image is a rough just of how the setup will look. taken a while ago as I made a few layout changes... more pics and info all to come.

I really like the layout of your screen, the most important thing is to be able to memorise and find the dial you want fast.. that looks easy the remember.
Excellent stuff.

[Sardonicus]

SILICONEKID345HP said:

Can someone explain what semi and full sequential injection means in plumbers terms.

Can I have fancy things like that connected to the Emerald ?

Semi on the RV8 is firing a pair of inj's at a time or full seq firing each cylinder in seq bit like how the clockwork dizzy fired each cylinder but fuel not spark, not sure i'd bother with semi-seq on the RV8 but full-seq is all good in my books rather than just old school batch/bank fire i.e 2 lots of 4 cylinders at a time but many of us use this successfully, you would have to speak to Emerald concerning full-seq Daz I dont know much about the Emerald I'm afraid

Edited by Sardonicus on Thursday 12th January 20:27

[SILICONEKID345HP]

Is TPS also basic ?

Is the mbe mapped by TPS ?

Edited by SILICONEKID345HP on Thursday 12th January 21:50

[ClassicChimaera]

SILICONEKID345HP said:

Is TPS also basic ?

Is the mbe mapped by TPS ?

Edited by SILICONEKID345HP on Thursday 12th January 21:50

Basic? It works by giving a given voltage at whatever throrttle setting and calculating its position, the only thing that can go wrong as far as I've read (2 minutes ) is you set it up wrong or the TPS fails but there normally robust items are they nor?

Yes TPS

[SILICONEKID345HP]

Mine is TPS but there are better methods when it comes to mapping .

[ClassicChimaera]

AdriaanB said:

Great to hear the good stories on the MBE set-up - my next car investment will be a new ECU set-up for my Chimaera When you decided on MBE, did you also consider alternatives (such as Canems)?

I'm one of those who got to know Dom through having engine and maintenance work done at TVR power
(Powers Performance)
He's my local specialist and I've always been impressed with the rolling road set up and Jasons concentrated approach.
I spoke with a couple of people regarding other Ecu namely the Canems and Emerald, very little difference in price fitted and when you think of mapping sessions and road mapping it pays to be near your mapper.

I'd seen the Powers inspired loom for the RV8 MBE in another car there once and that was what did it for me. That and no stepper motor. I saw a pic of some nice painting of rocker covers etc earlier, then I noticed the stepper motor and shuddered,,
That and Doms intimate knowledge of these engines with Jason's brains on the MBE
it's not a decision I regret.