Supraman Posted June 7, 2005 Share Posted June 7, 2005 Hope someone can help with this one as I have just about torn out what little hair I have left in frustration... Recently had a walbro fuel pump, HKS FCD chip, HKS VFC chip, full decat (bit of a story there), speed delimeter chip and finally HKS EVC 5 Boost controller. Problem is that the car will not exceed 1 BAR before turbo cut kicks in. To solve this removed the restrictor ring...didn't cure problem Had a friendly Japanese waiter (!) translate the HKS boost controller instructions and as a result removed the stock boost controller soleniod...no effect. Really stuck where to go now! I think English instructions for the boost controller would be a major help if anyone could assist. Question...why the feck do HKS supply goods to the UK market with fecking Jap instructions!!!!!! Rant over! Any suggestions as to fixing this or things to check would be appreciated. Link to comment Share on other sites More sharing options...
terribleturner Posted June 7, 2005 Share Posted June 7, 2005 OK, with the BC off, what are you reading at WOT?? And what are you reading with it on?? And i take it it's a J-Spec Link to comment Share on other sites More sharing options...
Supraman Posted June 7, 2005 Author Share Posted June 7, 2005 With the BC off 0.9BAR...with it on 1.0BAR and its a J-Spec Link to comment Share on other sites More sharing options...
terribleturner Posted June 7, 2005 Share Posted June 7, 2005 HHhmmm, well 0.9 bar is 13psi, and im sure you should be seeing slightly more with it off. Maybe 15psi (just over 1 bar). What back box have you got on?? And removing the Restrictor ring? Very odd. Maybe one of the hoses is split and you have a boost leak. Link to comment Share on other sites More sharing options...
Supraman Posted June 7, 2005 Author Share Posted June 7, 2005 terribleturner said: HHhmmm, well 0.9 bar is 13psi, and im sure you should be seeing slightly more with it off. Maybe 15psi (just over 1 bar). What back box have you got on?? And removing the Restrictor ring? Very odd. Maybe one of the hoses is split and you have a boost leak. HKS Silent Power. I think it could be the way the BC is plumbed in hence the request for English instructions. Checked the pipes for leaks but couldn't here any hissing noise etc and they looked OK. Link to comment Share on other sites More sharing options...
Kopite Posted June 7, 2005 Share Posted June 7, 2005 not sure if resetting the ECU will help but worth a go after a decat maybe? Link to comment Share on other sites More sharing options...
Supraman Posted June 7, 2005 Author Share Posted June 7, 2005 kopite said: not sure if resetting the ECU will help but worth a go after a decat maybe? How would I do that? Link to comment Share on other sites More sharing options...
Kev.O Posted June 7, 2005 Share Posted June 7, 2005 Have a look at this thread mate: http://www.mkivsupra.net/vbb/showthread.php?t=35450&highlight=resetting Link to comment Share on other sites More sharing options...
Kopite Posted June 7, 2005 Share Posted June 7, 2005 either pull the fuse or disconnect the battery for 30 secs - it won't hurt at all but i'm not the most technical of people on here, somone will be along shortly..... Ian C about anywhere? this thread will say more http://www.mkivsupra.net/vbb/showthread.php?t=35450&highlight=resetting+ECU Link to comment Share on other sites More sharing options...
Kev.O Posted June 7, 2005 Share Posted June 7, 2005 kopite said: either pull the fuse or disconnect the battery for 30 secs - it won't hurt at all but i'm not the most technical of people on here, somone will be along shortly..... Ian C about anywhere? this thread will say more http://www.mkivsupra.net/vbb/showthread.php?t=35450&highlight=resetting+ECU Link to comment Share on other sites More sharing options...
Kopite Posted June 7, 2005 Share Posted June 7, 2005 doh! didn't see you'd just beaten me to a link! Link to comment Share on other sites More sharing options...
heckler Posted June 7, 2005 Share Posted June 7, 2005 i'd say the FCD aint working. out of all the things you have listed, its the only one that could/can effect boost/fuel cut Link to comment Share on other sites More sharing options...
Supraman Posted June 8, 2005 Author Share Posted June 8, 2005 guys thanks a lot for all your help! Much appreciated...will give this a try tomorrow Link to comment Share on other sites More sharing options...
Ian C Posted June 8, 2005 Share Posted June 8, 2005 Yeah, easy guys, if you re-read the symptoms it's "boost cut at 1 bar", not "failing to achieve more than 1 bar" Sounds like the FCD isn't doing it's job. It may be adjustable by some little potentiometer inside the casing. If you turned that all the way in one direction then tried your car again it'll either cut in earlier or much later. Of course, watch out for overboosting -Ian Link to comment Share on other sites More sharing options...
heckler Posted June 8, 2005 Share Posted June 8, 2005 heckler said: i'd say the FCD aint working. out of all the things you have listed, its the only one that could/can effect boost/fuel cut Link to comment Share on other sites More sharing options...
Ian C Posted June 8, 2005 Share Posted June 8, 2005 Yes, yes, you got it right /pats head -Ian Link to comment Share on other sites More sharing options...
heckler Posted June 8, 2005 Share Posted June 8, 2005 Ian C said: Yes, yes, you got it right /pats head -Ian lol - cheeky. Link to comment Share on other sites More sharing options...
TRD3000GT Posted June 8, 2005 Share Posted June 8, 2005 I agree it must be the FCD Link to comment Share on other sites More sharing options...
Aerotop Dave Posted June 8, 2005 Share Posted June 8, 2005 I knew it was the FCD all along, I just didn't want to show you all up Link to comment Share on other sites More sharing options...
The Hornet Posted June 8, 2005 Share Posted June 8, 2005 Ditto Link to comment Share on other sites More sharing options...
normore1 Posted June 9, 2005 Share Posted June 9, 2005 I would have thought that if it was the FCD then he would hit fuel cut rather than just be limited to maximum 1.0 BAR. Fuel cut is obvious (the fuel shuts off at 1.0 BAR and the MIL lights up. It feels like the car hit a wall similar to when the TRAC cuts in!!! If you are simply hitting boost limit at 1.0 BAR then most likely you have the boost controiller incorrectly plumbed or the programming is set wrong. BTW resetting the ECU will do nothing to fix either boost limit or fuel cut problems. It simply erases the learned air/fuel and timing maps (I think which can vary +/- 10% from the base curve) and resets to the base curve. It will clear any prior fuzzy logic adjustment of the timing curve for pinging, preignition or detonation. Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 9, 2005 Share Posted June 9, 2005 I agree with normore1 What's this "story" with the cat pipes, is there a clue in there perhaps? Link to comment Share on other sites More sharing options...
Ian C Posted June 9, 2005 Share Posted June 9, 2005 "the car will not exceed 1 BAR before turbo cut kicks in" say to me it's fuel cut, not an inability to get past 1 bar. -Ian Link to comment Share on other sites More sharing options...
Aerotop Dave Posted June 9, 2005 Share Posted June 9, 2005 omg, getting tricky now - side with Mr Bathroom or site technical bloke? It's definitely the FCD, but I would check the boost controller. And the decat pipes. might get away with that Link to comment Share on other sites More sharing options...
Ian C Posted June 9, 2005 Share Posted June 9, 2005 I'd say further speculation is useless until Supraman clarifies the problem how's that, Dave? -Ian Link to comment Share on other sites More sharing options...
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