Irvy Posted October 11, 2004 Share Posted October 11, 2004 hi folks am hoping to get some help on yhis issue(s) bought my car stock and have recently put a Nur spec exhaust on, blitz induction, had a single cat removed and a TRL FCD put in. When accelarating hard at around 60 or 70 and heading past 100 the ride aint smooth as the car seems to - how can i describe this?-pop along!!! Along with this i have experienced on the 100 mark or just beyond had the car stall like the brakes had been applied hard (just for a second or so) I have found that placing the baffle in the exhaust helps a little and I rejigged the FCD from setting 8 to 7...this appears to have assisted slightly. am i doing the right thing by purchasing a walbro as I am assuming my fuel may be the problem any help/assistance greatly received irvine Quote Link to comment Share on other sites More sharing options...
Jake Posted October 11, 2004 Share Posted October 11, 2004 It does sound like it might be fuel cut. Do you have a boost gauge? At what boost level does this problem occur? Fitting an uprated fuel pump will not stop fuel cut if the ECU is cutting the fuel supply because of the increased boost. There are good reasons for fitting an uprated fuel pump but stopping fuel cut isn't one of them. Quote Link to comment Share on other sites More sharing options...
Guest f3nr15 Posted October 12, 2004 Share Posted October 12, 2004 Originally posted by Jake It does sound like it might be fuel cut. But he has a TRL Fuel Cut Defender... Quote Link to comment Share on other sites More sharing options...
Paul -C- Posted October 12, 2004 Share Posted October 12, 2004 Sounds like you're hitting boost cut. You need to get colder spark plugs to cope with the extra boost... I'd recomend Denso 22's or 24's. I got mine from Envy Quote Link to comment Share on other sites More sharing options...
Steve Cargill Posted October 12, 2004 Share Posted October 12, 2004 The non smooth bit will probably be your spark plugs breaking down and being unable to cope with the higher boost. When I came across it I described it as a soft cut as I thought it was the FCD, but I was wrong! Proper fuel cut is a big brown trouser moment the first time you hit it. the red triangle comes on and you think it's badly broken. The FCD just raises the stock fuel cut. Have you got a boost gauge - if not GET ONE NOW before driving hard again. Stock plugs give up about 15-16psi normally. Going above 18 with stock fuelling and turbos is unwise.... Quote Link to comment Share on other sites More sharing options...
Irvy Posted October 12, 2004 Author Share Posted October 12, 2004 Sounds likegood advice...had a feeling i was on the right tracks I do have a boost gauge - just not fitted yet. Also will have the plugs changed to make sure. will drive likes its sunday all week!! thanx guys...will let you know how i get on once the pump is in and the plugs changed. Irvine Quote Link to comment Share on other sites More sharing options...
Jake Posted October 12, 2004 Share Posted October 12, 2004 Originally posted by f3nr15 But he has a TRL Fuel Cut Defender... The TRL fuel cut defender doesn't remove fuel cut. On it's initial setting it moves the point at which it cuts to (iirc) 1.25 bar. Quote Link to comment Share on other sites More sharing options...
THOR Racing Posted October 12, 2004 Share Posted October 12, 2004 Exactly... So it's likely the VFCC is actually reintroducing the fuel cut at a higher boost meaning your car is boosting beyond 18.5->19psi. This is the O'boost setting of B (4.95V) HOWEVER!!!! I will stress that this MUST be associated with the same RED TRAINGLE warning light on the dash or it's NOT fuel cut. I've had many people say that the VFCC didn't work only to discover that in fact it's either plug mis-fire (like a RPM limiter) or Top Speed limiter related. Pete Quote Link to comment Share on other sites More sharing options...
GeordieSteve Posted October 12, 2004 Share Posted October 12, 2004 Sorry for the thread jack but I aint fitted my FCD yet but since I fitted my cat back system and Apexi filter the triangle warning light keeps coming on when I put my toe down Quote Link to comment Share on other sites More sharing options...
supratoy Posted October 12, 2004 Share Posted October 12, 2004 hey as soon as i got my de-cat that started to happen to my tt( fuel cut) I got a boost controllor but it didnt help. I was recommened to fit a fuel cut defender Ive got new apex i 7 plugs so just wondering if its defo fuel cut iam hitting thanx Quote Link to comment Share on other sites More sharing options...
Chase Posted October 12, 2004 Share Posted October 12, 2004 When I hit fuel cut I don't get the red triangle lit up on the dash... Quote Link to comment Share on other sites More sharing options...
Steve Cargill Posted October 12, 2004 Share Posted October 12, 2004 Originally posted by Chase When I hit fuel cut I don't get the red triangle lit up on the dash... Then either it's not fuel cut, you've got a broken red light or it is cutting the fuel in another way. What does it feel like when you get your fuel cut? a) soft rev limiter b) big wallop, total loss of power for a couple of seconds then back to normal c) something else? Supratoy, a boost controller allows you to control the boost. Fuel cut is a safety device to help prevent the engine melting. BTW, hi Pete, not heard you for a while. Quote Link to comment Share on other sites More sharing options...
Chase Posted October 12, 2004 Share Posted October 12, 2004 It's defo b Steve. I can do it predictably as well...Feels like hitting a brick wall, then back to normal after a second or so. I've got a TRL FCD here waiting to go in, so if it stops after fitting that, then it must be fuel cut. No blown bulbs btw...well not behind the triangle Quote Link to comment Share on other sites More sharing options...
Steve Cargill Posted October 12, 2004 Share Posted October 12, 2004 Originally posted by Chase No blown bulbs btw...well not behind the triangle If it's stock (or raised) fuel cut you will get the red triangle. Does this bulb come on, I think the handbrake lights it. Is it possible you already have some other electronics in there? Or...... you are too busy watching the road as you are at WOT to see the light come on? Quote Link to comment Share on other sites More sharing options...
Chase Posted October 12, 2004 Share Posted October 12, 2004 Steve, Trangle bulb deffo OK - Lights up with handbrake/door open etc. Not seen any extra electronics when I've been in the footwell fitting RLTC & ETTC. I've fitted a Walbro and BKR7E's after it was missing at high revs/boost after fitting RSR. I suppose I have been staring at the road at WOT , but I'll check again tomorrow that the warning light doesn't come on. You got me wondering now...I was pretty sure it was fuel cut - hitting 1+ bar for about 3-4 seconds then it would cut. (maxing at 1.2 bar) If it's not fuel cut, whjat else could it be? Cheers Quote Link to comment Share on other sites More sharing options...
Steve Cargill Posted October 12, 2004 Share Posted October 12, 2004 Chase, stock fuel cut is under 1 bar, it's about 14PSI. Stock plugs give up at 15-16 PSI, so you'll hit stock fuel cut before stock plugs start to give up. Sounds very much like you already have something playing with the electronics. As you had to change plugs already. Removing cat 2 you will be able to hit fuel cut on cold days. With a full decat and big exhaust you'll be there all the time!! Pete's one allows you to raise the fuel cut (within sensor limits) to what you have determined is the safe maximum of your engine build, it's part of the tuning process. I'd get it looked at properly. Quote Link to comment Share on other sites More sharing options...
Irvy Posted October 12, 2004 Author Share Posted October 12, 2004 Originally posted by Steve Cargill Then either it's not fuel cut, you've got a broken red light or it is cutting the fuel in another way. What does it feel like when you get your fuel cut? b) big wallop, total loss of power for a couple of seconds then back to normal This is what i experienced...wish i knew my boost level. tomorrow i am having NGK platinum plugs fitted (and just found a web site saying poor choice!!! oops!!). guess i gotta try something tho... I just wont go fast till my pillar arrives for my boost gauge. Have a better understanding then:confused: ps...never seen my triangle light up either Quote Link to comment Share on other sites More sharing options...
Irvy Posted October 13, 2004 Author Share Posted October 13, 2004 hu guys I got my new plugs this afternoon...and would you believe it...60 - 120 was shoooo shhhmooth!!!! (Mish Moneypenny!! I am still having the pump fitted when it arrives andmy boost gauge also just to make sure all is well. Had a thought tho...i went for these BPU's without much thought and didnt find a thread explaining how to go about it - IMO it should be sorta - spark plugs, pump (if required) then induction followed by decat and exhaust...this may negate the problems i was wxperiencing. i now gotta re set my FCD:devil: Irvine Quote Link to comment Share on other sites More sharing options...
Terminator Posted October 13, 2004 Share Posted October 13, 2004 Originally posted by Irvy .................. i am having NGK platinum plugs fitted . Oh no!!!!!!! Quote Link to comment Share on other sites More sharing options...
tbourner Posted October 13, 2004 Share Posted October 13, 2004 I got some BCPR7ES plugs to go in, but have only just got the pipes to replace as mine are old and dry. Before that I didn't have an allen key that fitted, before that I didn't have a spark plug socket!!! Bloody hell why are the simple things so damn hard!!!! Quote Link to comment Share on other sites More sharing options...
Steve Cargill Posted October 14, 2004 Share Posted October 14, 2004 Originally posted by tbourner Bloody hell why are the simple things so damn hard!!!! If you've never done it before be super careful with the coil pack connectors. They will be brittle and break easily. Before you ask they are part of the main wiring harness. I think somone has manage to get replacments though, but best not to break them. If they do get broken then make sure you put them back on the roght way around. Quote Link to comment Share on other sites More sharing options...
dude Posted October 14, 2004 Share Posted October 14, 2004 Originally posted by Steve Cargill If you've never done it before be super careful with the coil pack connectors. They will be brittle and break easily. Before you ask they are part of the main wiring harness. I think somone has manage to get replacments though, but best not to break them. If they do get broken then make sure you put them back on the roght way around. I allways keep a full set in stock steve , more and more are breaking . Dude:flame Dev Quote Link to comment Share on other sites More sharing options...
Irvy Posted October 14, 2004 Author Share Posted October 14, 2004 thanx terminator!!! LOL my pump arrived today!! Quote Link to comment Share on other sites More sharing options...
Steve Cargill Posted October 14, 2004 Share Posted October 14, 2004 Originally posted by dude I allways keep a full set in stock steve , more and more are breaking . Personally, I blame it all on sausage fingered mechanics with the finess of a road digger, nothing to do with age and heat stress on them. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.