Have an 97 sti type r and when i floor it it splutters/mis fires then it goes all right.This is most noticable when i was doing donuts the other day.I got about two circles done then the car just bogged down then stalled.I have an hks filter,hks down pipe and system and an unknown vta dumpvalve.I run the car on super unleaded with millers booster.Car has done this since i got it mods did not affect it.Car also runs and idles perfect.Could this be overboost and could this be turned down manually cause i dont want to spend a fortune on more electric gizmos and it not cure the problem. there is also no boost g. or k.link fitted.

 

Anyone an idea

 

I had a similiar problem turned out to be cracked coil packs.
cheers mac

 

sounds like maf mine did same now pistons have gone

 

Should be able to borrow parts to check.Is the maf the sensor on the air intake.

And what are the coil packs is this where the plug leads go on top of engine?

cheers for the replies

 

Doing donuts will force the fuel sideways if you were running quarter of a tank or less, the fuel pump is struggling to supply the fuel, as its up the side of the tank as opposed to the bottom.....

 

yes on air intake if u have none standard filter put standard one on these cause mafs to fail for my sti mine was a whole unit 3oo pound but the damage is done and now havin new pistons in check it quick yes its on air intake if its gone change lamba 2 cats-direct 35 pound, main dealer 200 pound my car is a sti 97

 

I'd go along with XtremeScoobies here. Fuel surge, uncovering bottom of fuel pickup during tight turns. Where you on lowish fuel at the time?

And less fuel means running lean and hence ...... Bang!

Possibly.