Damn, damn, DAMN

[1ViciousGSX]

I figured everybody knew what was on my car from the Featured Members post. :uh:

I have replaced the ignition transistor module.

I was having this problem before my car hit 29-30psi.

It still drives fine, no loosing coolant, no miss-fires under light boost.

The 2 plugs are dark from fuel, probably from miss-firing.

Originally posted by Nash@Oct 29 2003, 10:03 PM
http://www.dsmstyle.com/forum/index.php?showtopic=25

1ViciousGSX:* PLEASE, PLEASE, PLEASE, give us all the correct information about your car (year, engine, 5-speed or auto, current mods, turbo or non-turbo, etc.). This can only HELP YOU get the best answers to HELP YOU.

Not everyone knows what you have done to your car.
Modifications so far:

Engine · HKS 272/272 intake/exhaust cams - Fidanza Timing Gears - Balance shafts removed - Fluidyne radiator - FAL Twinline fans - (NOTE: I'm still running the stock 2g intake manifold, cylinder head, shortblock, and throttle body)

Fuel/Ignition · DSMLink v2 ECU Datalogger/Tuner Package (If you are not running one of these, you should be!!!) - MAFTranslator w/GM 3.5 LS1 mas - Apex-i S-AFC (only for display of rpm & tps) · DynoTune Digital O2 Meter - 750cc FIC Ball/Disc injectors · Upgraded fuel pump - Fuel pump re-wire w/10 gauge wire · MSD 8.5 spiral core wires - NGK BPR7EIX (Iridium) Plugs gapped at a tight .028

Turbo · VPE GT3056 TO4E B/B Turbo · Tial 40mm External Wastegate - VPE S/S O2 Housing Routed for External-Internal Dump - DN Performance Tubular S/S Manifold · HRC Upper/Lower Intercooler pipes · Dejon Tools intake pipe - K&N air filter - GReddy Type-S BOV · GReddy EGT · Autometer Phantom Boost Gauge · GReddy Profec-B Boost Controller · GReddy Turbo Timer · BIG GReddy 24R FMIC (upper part of bumper opening cut out behind upper black strip for improved air flow to FMIC) · Catch Can breather element

Suspension/Handling · Eibach Pro-kit 1.5" springs which have been cut to lower the car a total of 2 inches · KYB AGX 4-way adjustable shocks · Ingalls adjustable camber kits at all four wheels - Front/Back strut tower bars · 18x8 Rays Engineering/Volk Racing AV3 wheels · Nitto NT555 225/40ZR18 tires · Metal Master brake pads

Clutch · Clutch Masters 2500lb w/Ceramic 4-puck Sprung Hub Disc (custom kit good for 600+ HP) · Clutch Masters Billet Aluminum Flywheel w/Steel Face

Exhaust - RSR 3" downpipe · HRC 3" hi-flow cat · Apex N-1 3" cat-back exhaust

[Jakey]

Since I really don't know much about this tech stuff I'm going to ask this, is there any sort of relay (or something serving as a type of relay) somewhere on the fuel system that when you're demanding the amount of fuel to match 29-30 lbs of boost, something isn't right causing the relay to shut down a couple of cylinders? I'm probably talking 100% out of my ass but it was an idea....

[1ViciousGSX]

Originally posted by Jakey@Oct 30 2003, 11:43 AM
Since I really don't know much about this tech stuff I'm going to ask this, is there any sort of relay (or something serving as a type of relay) somewhere on the fuel system that when you're demanding the amount of fuel to match 29-30 lbs of boost, something isn't right causing the relay to shut down a couple of cylinders? I'm probably talking 100% out of my ass but it was an idea....
The ecu will kill cylinders that miss-fire excessively.

The 29-30psi is not causing the problem. It does the same thing at 20psi.

[Raptor]

Well it sounds like you have covered everything ignition related for sure. With it just happening in 2 cylinders, I would agree with shane on the possibilty of a head gasket or something similar. Maybe do a leak down test on all the cylinders and compare at high pressure levels to see if something is leaking under boost. Maybe the head bolts are stretching enough under pressure to allow a leak only after you are over 20 PSI.

[1ViciousGSX]

I may have found the problem, looks like the ASS that worked on my transmission under warranty at Mitsu cross threaded the upper bellhousing bolt that the negative battery cable attaches to. It sticks out about 1/4 inch and the cable end just wiggles on it. I can't get it out or in to tighten. STUPID FUCKER at Mitsu.

[Goat Blower]

Yeah, I'd guess ignition, and I'm guessing both black plugs are on adjoining cylinders for one of the two coils. A bad ground could cause that. Aren't you getting a CE code?

[1ViciousGSX]

No codes

[Goat Blower]

Are the fouled plugs 1 and 4 or 2 and 3?

[1ViciousGSX]

Originally posted by Goat Blower@Nov 1 2003, 02:23 AM
Are the fouled plugs 1 and 4 or 2 and 3?
I don't actually remember which cylinders they were from. I was trying to get to the track and just pulled them out quickly to re-install the BPR7ES plugs I had to see if that helped because alot of people want to say the BPR7EIX (Iridium) plugs don't work well. Didn't make a difference though.

The car will be back at Mitsu Monday morning. I told them I am not paying for their fuck up on that bolt and they better not scratch the fucking car again. Everytime it has been there something happens to it. If it wouldn't have been for the warranty, it wouldn't have been there in there first place.

It's not a big issue if it is the engine itself. I would just like to know for sure before the new engine arrives. I'd rather figure this problem out on the old motor vs. fighting it on the new engine if it is something else.

[Jakey]

Did you get the problem solved yesterday Mike?