Technical  punto gt

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Technical  punto gt

peter1807

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My Gt Miss Fires Like Hell When In Boost, Then Clears After A While, Anybody Got Any Advice Or Hints As To Why This Might Be?
My Cars Currently Running At 205bhp Cheers!
 
I Put A New Set Of Champion Eon1 Plugs In 2 Weeks Ago, Thinking That Was The Problem, It Helped A Little, Very Little, Not Sure What Fuel Pump Is On It But Think It May Be Needing A Motorsport Upgrade. Cheers Pete!
 
once turbos turned off on incar boost digital control hks, it doesn't miss as far as i know i'll deouble check tomorrow! cheers mate!
 
What Turbo you running ? Chip ? Fuel pump ? Are you running a FMIC, FSE, De cat, Air filter ?

Anything else ?

Also what boost are you running in psi ?
 
sounds like the worst thing possible on a turbo car.

engine meltdown:slayer:

basically the engine *might* (not saying it is pre detonation, but could be, my turbo volvo did it once, on a moutain pass at around 1800ft, just that little bit of altitude made it pre detonate like feck! had to drive really carefully back down again) not be getting enough fuel on boost (maybe your maps are all to pot, or you've got a faulty sensor somewhere) and there fore its soo lean and something else (forgot the other culprit) and heat aswell, the fuel is exploding too soon, so your engine internals aren't getting the fuelling they need to lube up properly, so chamber tempretures sky rocket and you get what sounds and feels like a misfire on boost.

you probably knew that, and can explain it better, but just to make sure your maps aren't all messed up, turn the boost right down to virtually factory and see if it does it then.
then start turning the boost up in 1psi increments, run the car (at least a mile or two) and see how far you can raise the boost before it starts happening agan

simple trial and error fix's most problems but takes the pee:D
 
This is what the spec of my car is:
Balanced front pullt,
Lightened, polished & balanced conrods,
Lightened & balanced flywheel,
Balanced crankshaft,
Balanced clutch cover plate (whatever that is),
New bearings throughout engine rebuild 15000 miles ago,
Abarth specification camshaft,
Modified camshaft box,
IHI Hybrid turbocharger RHB5,
Supersprint exhaust & De-Cat,
Front mounted alloy double size large tube intercooler,
SAMCO hoses & large bore alloy intake pipe,
HKS Sequential BOV dump valve,
Green cone air filter,
K&N crankcase breather,
Aquamist water injection,
HKS EVC5 boost controller,
Lumenition air/fuel ratio meter,
HKS turbo timer,
Powerchip maximum boost 1.3 bar 205bhp,
Magnecore racing specification 10mm plug leads,
Alloy header tank and fuse covers,
Quickshift gear linkage,
Double size side mounted oil cooler 1/4 mile in 14.986 seconds.
Cheers!
 
il try this after work twmorro? ive also been told to leave my battery disconnected for a while, should i do this? any advice will be useful! THANKS!
 
1/4 in 14.9 is slow for that spec.

Could be one of the following.

Running to much boost
AFM
Coil pack
lamba sensor

What spark plugs are you running ?

Are you getting the injector light on at all.
 
im using champion eon1 plugs, i dont know what afm means, ive orderd a motorsport fuelpump, no that red light doesnt cum on.so i wud like anybody who cud help me? my car stop missfiring on boost i wud be very greatfull thanks.it might be related but when i start it in the morning it misses and splutters untill choke goes off then idles fine.
 
AFM - Air Flow Meter.

You need to run a bigger fuel pump and fse to control the fuel pressure.

Also clean you ICV - Idle Contol Valve.

You want to try NGK BCPR7ET plugs.

Could be a number of things, i would try the fuel pump and fse if your only running standard pump.
 
im having a motorsport fuel pump 1or 2 days ,will i need an fse aswell any body? help needed.
 
have you had this rolling roaded at 205 bhp or is this just a guestimate ?

Yes you will want to run an fse.
 
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i took his word on bhp.and dont know of anywhere too get it rollingroaded as i live in swansea.this is my first gt i think its a gt3 on a p geg do you know of a local place to have it rr thanks.
 
TBH you cant take his word on it, i doubt its 205 bhp

I would of said its a GT2 on a P reg.

I wouldnt know local, i live in Newport there is Westec.
 
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