wierd response

[sombra13]

Ok straight to point car was fine b4 .
Today I punched it from complete stop
Took off but slow didn't rev past 4k so no activaion of vtec or iab .

No cel. No sputtering . No bogging

Engine: jdm h22 ob1 auto p13 ecu

Mods: no name header . 2.5 piping wih magnaflow high flow cat and muffler
Intake: stock

Anyideas wat would cause this

Fyi car feels fine and performs normal at daily driving

Thanx in advance and apologize also if I typed any thing dumb.

If no helping to the cause pleez don't post anything

[sombra13]

update so today i went to buy my tune up things im doin it tomorrow

and on the way home i decided to punch it car performed beautiful vtec iab engaged even chripped on 2nd lol.

then i went to pick up my younger bro decided to let him feel vtec and guess wat ..... samething happen didnt rev over 4k


cmon any one ?

i dont usually drive fast or punch it hardly but this has got me stumped

[sombra13]

C mon 27 views and not one response
?

[Raukorist77]

lol apparently no one has any idea whats causing it, or they just havent bothered to answer. from what youre saying with the inconsistencies, with it working and then not working, i would say a computer problem since thats what controls the vtec etc. but then again im no engine expert so someone will probably correct me

[sombra13]

So update I notice it works fine wen I first drive the car ,but after I've been driving it all day it get slow hmm

And I get u man I thought that also.
But is runs fine and responds beauiful wen I don floor it..

And it doesn't hit vtec cuz I doesn't go past 4k

Also if I have in park a rev the engine it doesn't stop at 4k