like it says i need opinons on plug gap for a lsj turbo swap. car is running about 22psi and also has meth. the plugs are autolite 3922.

 

Id start at .035".

 

What turbo?

And I agree with Matt. I think I set mine to .032". I'm pushing 20psi out of a PTE SCM5031E. No spark problems here.

 

.28 without issues.

 

its a 50 trim precision. I have tried .35 and .30 and i still have the same breaking up issue around 5500. I'm starting to think plug gap isnt my problem. today on a second gear pull it threw 2 codes which are p0103- maf circuit high and p0231- fuel pump low circuit. But when the car was on the dyno two days ago it was breaking us same as now but no codes. my afr was right around 11.5 through the pull and zero knock. so any ideas you guys have let me know. i'm open to anything. i think the maf high might be related to my meth nozzle location. i have it just before the throttle body then if looking at the car my maf is about 5 inches to the right.

 

dump the autolites get ngks one step colder

 

yea there hard to come by around here. what would be causing the two codes

 

ottp and zzp sells them lol i always get mines online. matter fact i beleive i think i have brand new sets at home from when i got my kit

um one is a maf sensor maybe maf settings/tune? maybe needs to be cleaned? or like u said maybe because or where ur meth nozzle is?

 

well found some ngk bkr7e's so gonna pick them up and try a plug gap .35

 

i think i have mines at .32

 

alright gonna try that at lunch time. i hope thats what my problem is. this car is starting to **** me off. soon i'll be making my third trip to the tuner

 

i feel u its always something trust me i know

 

If you are having misfire issues, don't be afraid to close the gap some. Try .028"

The MAF issue could be from Meth spraying or dripping on the MAF, but that usually results in an over-rich condition as the MAF reading spikes very high when water or meth touches the sensor.

 

^ try that he would know better than me

 

yea its weird car ran better with worn out autolite 3922 gapped probably close to .38 or .40 then it does now. maybe i should start around .38 and see how it goes

ok so i need to move the maf tube farther away then. i'll have to give that a try. any advice on the fuel pump code matt

 

I don't know about the fuel pump code. I've never had that one come up before.

 

great no one knows why its coming up. if something was unhooked or loose it would come up all the time correct not just intermittenly

 

Are you leaving the washer on the Spark Plug threads, or taking it off?

I'm not sure why you would still be having problems. I'm on a Precision 50trim as well, .032 worked fine for me. How much timing are you running? How much boost is it hitting?

Do you still have a Cat? What size exhaust piping are you running post-turbo?

 

yep leaving the washer on the plugs. just put in one step colder ngk. going to try a .28 plug gap and see what happens. as for timing i'm not completly sure i didnt do the tunning. tune time performance did it. as for boost right now its set around 20 till i figure this out. and i have a 3in downpipe no cat then still a 2.5in cat back. yea i know the cat back sucks but i doubt its the reason

 

I had really strange issues like spark blowout for almost a year in high boost when I ran a small exhaust. I ended up changing the entire setup except for the exhaust trying to figure it out.

Is your gate rerouted or open dump?

 

its dumped to atmosphere. plugs are ngk's gapped at .28. it seems to be a little better. i definately think it might be cause my meth nozzle is to close to my maf

 

should the washer not be left on the plugs?

 

i have to run .28 or it breaks up a little, im on 3" crush bent exh. also if its way rich like 10.8's - 11.2's then it does it. if i keep it .28 and run 11.7-12.0 it pretty much never breaks up all the way to 8k.

the last time mine did it at the top of third is when i blew my sleeve, so be careful.

 

yea i'm being careful. i think i figured out that my meth nozzle was way to close to the maf. i dont know why i thought it was a good idea to put it there. every time the meth was spraying it was soaking the maf. turned off the meth for now and it pulls great till either i get wheel spin or clutch slip