just bought a 92 hatch dx with a b16a2 with headers intake and msd cap and blaster car runs great has a chipped p30 only thing when it hits vtec it hesitates for like 3-5 seconds after hitting vtec then starts to pull hard after till redline ......what could it be

 

bad tuning.

 

sounds like your low on vtec fluid lmao


nah im just bullshittin, like ^^^^^ said it sounds like someone did a shitty job tuning it. replace the ecu or borrow a buddies and test it out see if it makes any difference

 

it sounds like a computer problem for sure, but can i ask why you chipped the p30 instead of finding a p28, p06, p72, etc?

 

he didnt.

the OP said he "just bought a 92 hatch dx with a b16a2 with headers intake and msd cap and blaster car runs great has a chipped p30."

 

or why did you jump generations in saying other ecus?

and a p30 is for a b16. just not this specific engine apparently.

 

your vtec kicks? well theres your problems.

 

That's what I'm thinking.

A B16 dyno normally has a little wiggle at vtec crossover, but shouldn't have that much of a hesitation. Assuming you don't have other CEL problems to look at, you need a good dyno tune.

 

got the car with that ecu .....could it maybe be the msd cap and blaster?? or the ecu

 

no codes runs fine only hesitates right after vtec hits for like 3-5 sec then pulls hard.....

 

find someone with a similar untuned ECU and try that.

they may have messed up the VTEC part of your tune.

 

will do thanks

 

tryed a few ecu and still the same :0(

anyone

 

oil pressure

 

oil change, leaking oil?

 

oil really dirty i havent changed it since i got the car but has oil

 

I had this same problem with a p28 that was tuned incorrectly. It's most likely your ecu.

 

Dude, VTEC relies on oil, heavy. Dirty oil, wrong thickness, low or not enough pressure. You need the perfect combo of all those to have "perfect" VTEC.

 

its probably the normal dip of flat spot in power at the vtec crossover that you're feeling. I bet its just a stock map on it and chipped to bypass throwing any codes

 

so does it need new oil or a differnt map on the ecu cause i tryed other chipped ecu and stock ones

 

Since you tried different ecu, get an oil change
New oil never hurts anyways =D

 

yea thats your next best bet.
you could check your vtec solenoid too just for fun.

 

i did tryed with my ooo si and same thing