ACT Twin Throttle Carbon Fibre Plenum - Writeup
Discussion
ThePrisoner said:
Matthew
Just got this months Sprint, great article and pictures. Always looks good in print, you must be proud with that.
Hi Brian, hope you are well. Yes very pleased with it, I never appreciated how much work goes into the articles until I wrote that. All I supplied was the text and few photos, they have managed to make it look absolutely fantastic. The track photographer at Bedford very kindly let us use a couple of his pics for which I am very grateful.Just got this months Sprint, great article and pictures. Always looks good in print, you must be proud with that.
SILICONEKID345HP said:
Did you dyno it before and after ?
Not as yet Daz, I am booked in at TVR Power on the 24th June with Mark Adams.My car is going in for its annual service this year with Dan Taylor in Kent. I am having to fit a new immobiliser system because the exiting one has died. 
In addition am planning on the larger 20am meter and twin throttle bodies (I already have the ACT induction kit and trumpets). Do you chaps think I will I need larger fuel injectors to go with these modifications?
In addition am planning on the larger 20am meter and twin throttle bodies (I already have the ACT induction kit and trumpets). Do you chaps think I will I need larger fuel injectors to go with these modifications?
griffdude said:
Will need a remap as you'll be getting a lot more air through the intake. Then you might find the injectors are maxed out so then its time for ones with a bit more flow(do a search on Vectra Injectors).
Sorry Matthew to but in on your thread,
Think these are the ones you mean:Sorry Matthew to but in on your thread,
http://www.ebay.co.uk/itm/Vauxhall-X20XER-X20XEV-F...
I bought 9 at various times and spend about £50-60 on them. Will get them cleaned with a report and use the best 8 so another £80-100 to get them cleaned and rebuilt as required.
Not fitted yet though.
FFG
I'd definitely do the injectors at the same time, you'll need a rechip for the larger AMM anyway and even if you might get away with bumping up the fuel pressure to 3.0 bar on the Lucas injectors and being able to map the top end properly, it will be marginal and the Vectra (Siemens/Bosch type) injectors have several advantages on the Lucas ones apart from their flow rating.
Don't be lured into thinking that you could as well get yourself some really 'big' injectors, though, just in case - unless you're actually planning on building a monster forced induction engine. The smaller your duty cycles on idling and low rpm/low load operation, the harder it becomes to get the driveability there.
Don't be lured into thinking that you could as well get yourself some really 'big' injectors, though, just in case - unless you're actually planning on building a monster forced induction engine. The smaller your duty cycles on idling and low rpm/low load operation, the harder it becomes to get the driveability there.
Edited by 900T-R on Friday 20th June 14:55
As Eric and Howard have pointed out if you are going for a larger AFM you should look at changing the injectors for upgraded items at the same time.
I had the large Bosch meter, Bosch red top spray pattern injectors and 3bar fuel reg fitted to mine last year and mapped up by Mark Adams. I did a write up on that at the time:
http://www.pistonheads.com/gassing/topic.asp?t=127...
The 20am and vectra injectors I am lead to believe will do the same job and will be cheaper.
I had the large Bosch meter, Bosch red top spray pattern injectors and 3bar fuel reg fitted to mine last year and mapped up by Mark Adams. I did a write up on that at the time:
http://www.pistonheads.com/gassing/topic.asp?t=127...
The 20am and vectra injectors I am lead to believe will do the same job and will be cheaper.
griffdude said:
Will need a remap as you'll be getting a lot more air through the intake. Then you might find the injectors are maxed out so then its time for ones with a bit more flow(do a search on Vectra Injectors).
Sorry Matthew to but in on your thread,
Thanks and apologies also to the OP for thread hijack. Sorry Matthew to but in on your thread,
I think the system would demand a new re-programmed chip but when you say remap, I didn't think the system was capable of live mapping like a modern car?
It will be interesting to see what the throttle bodies do. I'm hoping to get close to 300bhp.
No problems whatsoever on the thread hi-jack it is all relevant and related so crack on.
You are correct the original ECU chip cannot be re-programmed. There are two ways the tackle this, either buy a Tornado chip which replaces the EPROM in the original 14CUX, and get Mark Adams to remap it as per the link the that tread in my previous post. Or you can go for an aftermarket ECU.
You are correct the original ECU chip cannot be re-programmed. There are two ways the tackle this, either buy a Tornado chip which replaces the EPROM in the original 14CUX, and get Mark Adams to remap it as per the link the that tread in my previous post. Or you can go for an aftermarket ECU.
Nice write-up here and in Sprint magazine Matthew.
I have been running my Twin plenum base on a modified Rover Vitesse unit since 2010 and very happy with the results on my home built 4.5L Rover. The throttle response is excellent. It idles perfect and drives from cold smoothly. I'm using an Emerald ECU.
Mrs Precat and I have just completed a 1700 mile drive as part of the 3NG meeting in the Black Forest, Germany. It was fanstastic.
I have been running my Twin plenum base on a modified Rover Vitesse unit since 2010 and very happy with the results on my home built 4.5L Rover. The throttle response is excellent. It idles perfect and drives from cold smoothly. I'm using an Emerald ECU.
Mrs Precat and I have just completed a 1700 mile drive as part of the 3NG meeting in the Black Forest, Germany. It was fanstastic.
Hi Anthony, thanks and glad you liked the article. I did look at the Vitesse twin plenums for I bought the ACT one and they are going for silly money now, a good piece of kit and has a nice OEM look to it. I did see one sell on eBay for not far off £1000!!!!
I remember speaking to you about your car before, is has a cracking engine in it 4.5BV very rare and has all the free revving nature of the 400 / 430s but with more power than a 500. Good to hear it is running right as well, getting big numbers is fairly easy but getting it to idle correctly, drive smoothly at low speed and cold start are a challenge but essential for a road car.
I remember speaking to you about your car before, is has a cracking engine in it 4.5BV very rare and has all the free revving nature of the 400 / 430s but with more power than a 500. Good to hear it is running right as well, getting big numbers is fairly easy but getting it to idle correctly, drive smoothly at low speed and cold start are a challenge but essential for a road car.
Actually the CUX14 can be mapped like any other modern electronic fuel injection system, the only difference is you need to phyiscally replace the EPROM that contains the program with another one.
Mark Adams chooses to add a 'scrambler' between the Ecu's EPROM socket and his chip to protect his work from rip-off artists which I'd say is fair enough...
Mark Adams chooses to add a 'scrambler' between the Ecu's EPROM socket and his chip to protect his work from rip-off artists which I'd say is fair enough...
MPoxon said:
No problems whatsoever on the thread hi-jack it is all relevant and related so crack on.
You are correct the original ECU chip cannot be re-programmed. There are two ways the tackle this, either buy a Tornado chip which replaces the EPROM in the original 14CUX, and get Mark Adams to remap it as per the link the that tread in my previous post. Or you can go for an aftermarket ECU.
You are correct the original ECU chip cannot be re-programmed. There are two ways the tackle this, either buy a Tornado chip which replaces the EPROM in the original 14CUX, and get Mark Adams to remap it as per the link the that tread in my previous post. Or you can go for an aftermarket ECU.
SILICONEKID345HP said:
Where is the growl ?
All details here:http://www.pistonheads.com/gassing/topic.asp?h=0&a...
FFG
[quote=Precat]
Anthony, Just looking at your air intake hose. Am i right in thinking you have routed it into the headlight pod area.
Wheres the filter, inside the pod area or routed back out to in front of the radiator. Got to be better than the pre cat location sucking hot under bonnet air. Any pics of the filter set up ?
Anthony, Just looking at your air intake hose. Am i right in thinking you have routed it into the headlight pod area.
Wheres the filter, inside the pod area or routed back out to in front of the radiator. Got to be better than the pre cat location sucking hot under bonnet air. Any pics of the filter set up ?
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