my car 93 jdm fd fresh 4 k motor non seq set up only running wg spring pressure 0.5 bar since build (warranty). Car running fine til mods.
I have just fitted front mount IC , new radiator and battery relocate to boot. Plan was then to fit ebc at 0.9 bar.:chat
however flooded her whilst bleedin rad. so fitted new 10 and 9 plugs with leads whilst sortin that out.
i removed the already fitted apexi air filters. to fit the rad and airfilter. I removed the throttle body to fit the new leads.
now i get massive cut out and bank fire when trying to accelerate.... peak boost recorded on boost gauge 0.4 bar, more like 0.25 bar if flooring it. pressure tested ic and pipework and triple checked every coupler joint.....all ok. Not sure doing pressure test right as seems to just vent through the appexi\'s so blanked of and still no visible leak!
Cant hear the turbos either but tbh it cuts before i expected to hear them spool!
Cant think what i have done it\'s only an intercooler install......unsure if fuel cut or massive boost leak. any help appreciate.
was gonna re-install stock ic and see out ?
opps sorry posted in wrong place.
This sounds like a boost cut, i.e the ecu is trying to protect the engine by cutting the engine.
When you say put the stock ECU on, yes do it to be safe then my advise would be to get the aftermarket ECU remapped if the car then runs OK
Hope this helps
At present only got the stock ECU. Car was running fine on standard IC cant see why i would be suffering boost/fuel cut now due to front mount install?
Only running the turbo out to waste gate ( 0.5 ) and have not seen boost above 0.4 ! it cuts just as it feels its about take off ( if that makes sense). The boost pressure sensor is still connected but has no control over wastegate.
Can\'t see why it would be cutting now?
thanks for help.
One second, your running the car non sequential on the stock ecu??
If so, that will be your problem !
It\'s ran for 4k like it?(stock ecu, non seq 0.5 bar ) No problems at all only fitted a front mount IC ? No intention of car becoming a money trap..........
is this not supposed to work?
What ever you have done you have now got either more flow into the engine or out of it which is why you have got boost cut,
If you dont want to spend money , retrace your steps put the car back to how it was and away you go :Thumbs-up
Thanks for all the help! Gonna put standard IC back on make sure its back to normal and then do abit more research. The standard ic is about 1/5 the size of the 1 i fitted! Complete nightmare to do wish i\'d never bothered.....front bumper was fixed by self tappers by headlights! 7 hours to dremel off!
Even on 0.5 bar car felt flippin quick ! ( owned a r33 gtr & gts evo 8 scooby s14 s13 s12 ) and butt dyno quick as fq300 and gtr......just wanted more..... DOH!.
the wifes gonna kill me if i mention ecu remaps and turbo conversions !
OK THANKS FOR YOUR ALL YOUR HELP.
Jon
Right feel a bit silly now. Messed up my AFR readings hence reason cut.
What are my choices? Ive come this far !
What sort of costs are involved for remap? Can my stock ecu be used....?
Jon
Once you revert back to how things were, all will be ok
Well i returned everything back to normal....and still like hitting a wall at .4 bar. Mis fires and back fires......drives normal out of boost....Have i got a lead wrong? (new leads and plugs at same time).
Drove fine before.....getting quite frustrated now as spent the day putting it back to the standard IC !
Any lead diagrams? Had a google and could not find any?
any ideas.....?
Thanks Jon
im happy to take a look if you pop it over to mine but im only around tonight
Hi mate, Could you pop out to your car and just tell me which lead goes where? ....paranoid i got a lead wrong now and just what to eliminate .
Big Thanks for the offer but on night shift tonight.
Jon
Right just checking all the basics......
Dont think i got lead wrong.....just want to eliminate.
stood at left wing. outer coil left to top spark left. inner coil left to bottom left spark. right coil inner to top right spark and right outer coil to bottom right spark.
did not gap spark plugs as told don\'t need to? 9 and 10\'s ngk\'s L & T
turbos spooling fine just hits invisible wall and back fire ! WAS running sweet before mod.....
Any suggestions greatly appreciated. Tick over is fine revs freely no misfire.
thanks Jon
Has the MAP sensor popped off by any chance? The wee black box attached to the back of the upper inlet manifold. If that\'s ruined then it\'ll be burping and farting all over the place.
I don\'t think leads and plugs are your problem, otherwise it\'d be running rough all the time. In saying that however, you don\'t really need 9\'s and 10\'s unless you are running stupid power, i\'ve got 315bhp or so and still running 7\'s all round.
A remap session with Pip @ WGT (closest to you by miles) will set you back around £250
HTH
graeme
the coils are labled t1 L1/2 t2. on the housing it has L and T. L is the bottem T is the top. the leading is wasted spark so has two leads going to it. i do advise drawing things before taking them off for the first time
Thanks,
When i changed the leads i carefully folded back the throttle body onto the plenum.......maybe i have disturbed map sensor. Will have a look today after a sleep. Leads are fine.
Does that mean the front IC would have worked? I helped a mate fit a huge front mount to a r33 gts. No mapping ran fine (better).
My car has gone from a minter to a munter in 2 weeks! Lol. One thing for sure I am not messing with it any more once i get it sorted.
Thanks Jon
The install of a FMIC by itself shouldn\'t have affected anything. You\'ll see colder intake temperatures, and potentially a few more horses, but without a full remap you wouldn\'t get the full benefits.
Going by the symptoms you talk about, I\'d say it\'s likely you\'ve knocked something - possibly the MAP sensor (it has BOSCH or DENSO written on it IIRC).
Do a Google search or search the forum on here for the \'94 workshop manual, will help identify all the potential bits and bobs you\'ve touched, also the order of the leads :)
graeme
I had some sleep......Rang Carl at Haywards.........in safe mode!! ECU reset and all fine.......been out and gave a thrashing and so far so good!
due to flooding and trailing lead loose? Not front mount?
Front mount is still in there... but hooked up on standard ic.... got 4 days off starting tomorrow gonna hook it back up as i want to know if this put me in safe mode or not.
Many thanks for all help and comments...had a few sleepness nights and bloodied knuckles......
Jon
let me check something quick,.,,am i reading this correct
outer coil left to top spark left. inner coil left to bottom left spark. right coil inner to top right spark and right outer coil to bottom right spark???
sounds a little wrong,, basically the middle coil with the 2 leads should go to both bottom spark plugs . The left coil to top left plug and the right coil to the top right plug? yes?
that a typo error leads are spot on inner 2 leads on wasted spark to bottom plugs. left to top left and right to top right.
It works no problem and lag minimal....all in and working so can confirm front mount will work without new ECU and remap.
Ecu reset neg off brake pedal on 30 secs.
Hope my experience helps somebody else with their car...in all honestly wish i never fitted it absolute pig from start to finish.....but hey ho got there in the end.
once again thanks to all those who helped me in my hour of need.
Jon