Under wide open throttle the car is starting to break uparound 10 psi but it doesnt do it all the time. Mods are
780cc inj
sc61....20psi
z32 MAF
Greddy Intake
Step colder NGK brand new Iridums
Enthalpy tune w/ safc2(just to tweak it alittle also for RPM display)
Intercoller piping is all 3in.

It just started to do this, never had any issues before on 20psi, the z32 is running open with no filter just a screen. Does anyone have any ideas?

Thanks

 

Check your fuel filter, mine used to do this anytime the filter was semi-blocked.

 

Probably dirty MAF since your running no filter
Possible boost leak?

 

you might have sucked a bug in and f*d your maf up.

By "breaking up" do you mean misfiring at high rpms? It could be ignition related, check for arcing in the boots/cops, check your plugs and you'll see if its running rich or lean.

 

check for random boost leaks and moisture on the coil plugs and such

 

You NEED a filter!!! Mafs are very sensitive.... a draft or crosswind in the engine bay will throw the computer off.

 

when it breaks up it around 14.4 a/f, no boost leaks, new z32 fuel filter, I will try to clean it and throw a filter on it. Yes it seems to break up not really misfire cause it comes in sometimes and runs through the gears.

Thanks for the tips

 

Yikes! 14.4:1 at WOT under boost?

 

14.4 under load wot? wow get your car tuned, problem fixed, no more bogging.

 

lol...no sh*t what do you think a enthalpy tune and a safc are. crappy ways to tune but it works.... anyways I checked everything over again and try to clean the mAF best as possible and it seems to be working for know...thanks for the tips...hopefully wont have this problem anymore since the mAF will be out of the pic soon