I just got tuned last week for e70, and that day and the next the car was running fine. But the following day it started sputtering when I hit close to peak boost. I did some logs using my zeitronix logger(i dont know how to use mitsulogger yet) and it just showed the afr's and boost start jumping up and down around 21 psi and up. Just wondering if u guys had any thoughts on what the prob might be. Someone told me that my spark plugs might be fouled. I still have the stockers so that might be the case. thanks

 

How much boost are you running?

It could very well be misfire due to fouled plugs or spark blowout... only one way to find out...

 

yeah, i was going to check the plugs yesterday but I didn't have a long enough extension to get to them (time to buy a new set of tools). I am spiking at 25.5 psi. I have ordered new spark plugs so hopefully that does the trick. Where do u think I should gap them for the boost I am running, and I don't know if I should gap them differently for E70? Thanks again

 

Anyone else have any ideas? Should I have gone a step colder on my plugs? I'm at 4,000 ft elevation also...

 

BR7ES set at about .23 should do the trick and they're cheap as hell.

 

x2 but I would got a step colder with ngk BPR8ES

 

ok, thanks

 

E70 huh? What WHP did you put down when you got tuned? Running stock injectors? E70 requires a whole lot more fuel than standard pump gas. Could you list your mods done to the car? Walbro fuel pump?

 

I put down 382awhp on a low reading dyno on a stock 9 turbo at over 4000 ft elevation. I have 1000cc pte injectors, walbro 255, buschur tbe & intake, 272 cams, o2 housing, and ppi ported manifold. It feels pretty good. If we had e85 here I think I could get over 400whp pretty easily. Oh btw, I went a step colder on the plugs and gapped them at .023 and it runs wonderful now. Thanks guys

 

wow nice power man, glad everything is working out for you