Well i have a d16y7 with a t3/t4 turbo kit at 6psi, 240cc injectrs (Dsm Peak and Hold), msd ignition, chipped p28, and full exhaust. i just got done installing the injectors, and heres what happpend....i turned the car on and it idled fine, i put it in gear and it cruised fine, but once i stomped (WOT)on it it suddenly lost almost all power, acted like a bad launch (chugging back an forth) except in gear.

any ideas on what the problem could possibly be, ive heard throwing timing, bad plug wires, bad tune,... anything else? anything more logical?

 

no one ever helps me...

 

siiiiick my problems are always urgent, but go for the polls instead.lol

 

first of all 240cc injectors...thats not a dsm injector thats just a stock honda size, and i garentee your running your engine lean and thats why its bucking like a ******. could also be your spark plug gap..gap them down a bit

 

Yea those injectors seem pretty little. I see that your running a chipped ecu, what is your car tuned on and who tuned it?

 

is the car tuned? or you just running a chipped ecu which you think is a correct tune for your motor?
240cc injectors are wayyyyyy too small.......(unless you meant 450cc dsm's, or evo 560's)
sounds like it is a fuel or spark problem (most problems are)
what are the plugs gapped to? what temp plugs are you running?
what kind of msd ignition? just a 6al box or a full distributor, coil, plug wires, box etc etc,
more complete info would help us evaluate your problem.

and don't bump your thread twice within 45 mins....people will purposely not answer you if you do that.

 

timming could be offf
injectors are too small
its prolly lean as an anorexic chick

 

nope they are 240ccs it was tuned for 240ccs and im only runnin 6 psi max, so they are maxed out but it shudnt be running to lean. msd ignition coil cap rotor and wires, plugs are regular ngk, i remember that the rotor used tom just spark in a sequence, after the conversion it hase a bright orange ring on the outside of the rotor, is that the problem? i probly will go one stage colder, but wude i look for 8s? i dont kno what are in it rite now.

and as to the spark plug gap what should it be?

 

also i ran the car on 190ccs (stock) on the same setup w/out p28, and it ran alot better, ran lean but no bucking prob. i made the conversion and it started having these problems.

 

bump

 

...

 

get 390 or 450 dsm and have it tuned or other wise it going to blow up.

 

omg im not worried at the size of the injectors, im only making at most 180hp which these injectors can handle just under 200hp

 

anyone else have ideas, i like the sparkplugs im gonna chek the gap tomorro

 

if its not your fuel which i dont know why your running 240s on a boosted setup..its probably spark and as i stated check your gap i doubt its timing.

 

thank you im replacing for one stage colder.

 

that still won't help if gap is wrong, try the new plugs gapped at .032