dohc v6 Posted November 2, 2007 Author Report Share Posted November 2, 2007 How would i know that? Is there some way I can test. i did run a fuel tester on the car and it ran at 40lbs and then went up with boost,up till 90lbs and then it hit the 3lb mark and went down and then shot back up and it goes back and forth. I just finished replacing the plugs, well see what happens. Quote Link to comment Share on other sites More sharing options...
Nick1234 Posted November 2, 2007 Report Share Posted November 2, 2007 i have no clue how to find out. the reason i bring it up is because you said it was like it hit a rev limiter. in my lumina, if i add a little more boost, it seems to do the same thing. Quote Link to comment Share on other sites More sharing options...
dohc v6 Posted November 2, 2007 Author Report Share Posted November 2, 2007 Well it probably is doing that. I just ran the car and no go. PLugs did not do a thing. What would cause the car to not dump fuel? Quote Link to comment Share on other sites More sharing options...
skalor Posted November 2, 2007 Report Share Posted November 2, 2007 The first thing I would do is swap on some stock GM coils and get rids of the MSD ones. I don't know the specifics of your setup, but are you running a draw-though MAF?? EDIT: I see your running a blow-through MAF. What kind of MAF is that?? Quote Link to comment Share on other sites More sharing options...
dohc v6 Posted November 2, 2007 Author Report Share Posted November 2, 2007 Its not spark, its gotta be fuel. The maf I am running is the stock maf with lt1 end pieces. Quote Link to comment Share on other sites More sharing options...
dohc v6 Posted November 2, 2007 Author Report Share Posted November 2, 2007 So i disconnect the FMU and it works 5 psi on medium throttle and green on the A/F gauge. I completly disconnect the fmu vacuum source and now the car is fucking fast as shit. I might have a small vacuum leak but it does not do the jerking thing anymore. Maybe the FMU was dumping too much fuel? Quote Link to comment Share on other sites More sharing options...
skalor Posted November 2, 2007 Report Share Posted November 2, 2007 I say forget about the FMU, put on bigger injectors, and tune it the right way. Quote Link to comment Share on other sites More sharing options...
dohc v6 Posted November 3, 2007 Author Report Share Posted November 3, 2007 The only way to tune is going to be with a standalone system. I am going to change the FMU to a 4.1 instead of 12.1. I need a little more fuel but not 12.1 its just too much fuel. I need to do a little maintence tomorrow, and its very addicting. It wants to go faster and faster. I already smoked a 325 i twin turbp. Quote Link to comment Share on other sites More sharing options...
Chancho Posted November 3, 2007 Report Share Posted November 3, 2007 nice, a 335i tt isnt that a 13second car, and u pulled him, that car must be FAST Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted November 3, 2007 Report Share Posted November 3, 2007 well, if a stock 3.4 can pull a mid 15, a nice turbo one like this could easily be in the 13s Quote Link to comment Share on other sites More sharing options...
Chancho Posted November 3, 2007 Report Share Posted November 3, 2007 yea but to smoke means beat with great force (the new chancho dictionary) therefore one can infer that this turbo 3.4 could possibly run 12's im just talking out of my ass, time for bed Quote Link to comment Share on other sites More sharing options...
dohc v6 Posted November 3, 2007 Author Report Share Posted November 3, 2007 UMM not likly. I would be happy to run a mid 14. Quote Link to comment Share on other sites More sharing options...
Andrew Posted November 3, 2007 Report Share Posted November 3, 2007 i bet at least mid 13's. Quote Link to comment Share on other sites More sharing options...
Psych0matt Posted November 3, 2007 Report Share Posted November 3, 2007 UMM not likly. I would be happy to run a mid 14. that would be doable without a turbo, since stock (on a brand new or extremely well running motor) could run low 15s with a good driver. I'd be willing to bed you're pushing somewhere around 260hp or so (very open guess, since I have no idea your mods/tuning), and would run mid 13's all day. Quote Link to comment Share on other sites More sharing options...
dohc v6 Posted November 3, 2007 Author Report Share Posted November 3, 2007 Here is what I have or will have done to the car. hyperutectic pistions bored 20 over light weight lifters fully balanced crank clevite 77 bearings crom moly seal power rings srp rod bolts casting flash removed from entire engine 180 stat msd coils magnacore wires high volume oil pump with a high volume spring and blueprinted t3/t4 turbo 60 trim k and n filter thats really it I want to do in the very near future fully 3" exhasut with magnaflow muffs and resonators standalone fuel mag Quote Link to comment Share on other sites More sharing options...
dohc v6 Posted November 3, 2007 Author Report Share Posted November 3, 2007 Here you go Quote Link to comment Share on other sites More sharing options...
BXX Posted November 3, 2007 Report Share Posted November 3, 2007 Your hitting 80psi of fuel pressure!!!! There is your problem. At 80psi your lucky that the pintle can reseat in time. I think only Lucas and MSD Race injectors with proper injector drivers (i.e. standalone EMU) can handle that kinda fuel pressure... Quote Link to comment Share on other sites More sharing options...
skalor Posted November 3, 2007 Report Share Posted November 3, 2007 The only way to tune is going to be with a standalone system. I am going to change the FMU to a 4.1 instead of 12.1. I need a little more fuel but not 12.1 its just too much fuel. I need to do a little maintence tomorrow, and its very addicting. It wants to go faster and faster. I already smoked a 325 i twin turbp. I would use a newer OBDII LQ1 harness/PCM and buy HP Tuners. It's going to be cheaper than a stand alone and I have never seen a stand alone system that is better than GM OBDII PCMs. Quote Link to comment Share on other sites More sharing options...
intern8tion9l Posted November 4, 2007 Report Share Posted November 4, 2007 platinums are no good under boost. it tends to blow the electrodes off Quote Link to comment Share on other sites More sharing options...
per0781 Posted November 4, 2007 Report Share Posted November 4, 2007 get a real tune and go from there. did you get an upgraded fuel pump? Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted November 4, 2007 Report Share Posted November 4, 2007 Platnium plugs dont last under high cylinder pressures. Doesnt matter if its N/A or turbo. Quote Link to comment Share on other sites More sharing options...
dohc v6 Posted November 4, 2007 Author Report Share Posted November 4, 2007 I got rid of them. I put regular r42ltsm plugs in, seems to work a little better. I do have a new fuel pump. Its a walbro hp255 Quote Link to comment Share on other sites More sharing options...
dohc v6 Posted November 6, 2007 Author Report Share Posted November 6, 2007 Ok, I get boost, but my car still seems to take about 10-13 sec to cranks before it starts. I replaced the FPR and disconnected the FMU, new fuel pump and it holds a steady of 40 psi for a good while. Quote Link to comment Share on other sites More sharing options...
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