R33 Problem In 2nd

[engo]

hey guys.... so i have had my car back for only a week or so... r33 s1 with all bolt on mods.. everything was fine until last night i went for a spin and in 2nd there is a problem... il try describe... basically what happens is once i start full boosting at about 4500rpm (15 pound) a milli second after this back fire occurs..but its not a back fire.. or a mis fire.. it sound like a bunch of air getting dumped somwhere and i loose a few psi but then regain it straight after..its like a backfire but with boost... i tried lowering the gain and boost on my profec b ebc but still the problem occours... but only in second.. all the other gears rev out perfect.. i thought it may have somethin to do with my ext. gate... but what could it be.. all gaskets are perfect.. the gate is not old at all.. like not even 5000kms could anyone please try throw some suggestions i would be very greatful for any input.. in terms of boost i have a t04e, ext. gate, greddy profec b...so yeah.. maybe a tuning issue... but it didnt do it until last night.. plus i have just put in new coilpacks aswell brand new... so that cant be it either.. i hope not..

thanks guys..

alex

[paulr33]

what ecu? turn the boost way down until you get it fixed

if stock ecu -> you need a stand alone

if aftermarket -> look at getting in retuned, keep boost way down until you fix it

sounds like its detonating

[engo]

what ecu? turn the boost way down until you get it fixed

if stock ecu -> you need a stand alone

if aftermarket -> look at getting in retuned, keep boost way down until you fix it

sounds like its detonating

i have a microtech lt12s... it got tuned like a week ago... and now i took it for a spin today and it didnt do it at all.. like perfect... when you say detonating... its not like pinging or anything like that... so what would be detonating?? car isnt blowing any smoke, not using any oil... so engine is healthy... when it did it , it almost feels like a cooler pipe popping off then being put back on in a second if ya know.....BLOOODY SKYLINE!!!!!!! GRRRRRRRRRRRRRRRRRRRRRRRRRRR!!!!! I JUST REDID EVERYTHING ND NOW THIS.... FARK!!!!

thanks for your reply man..

[bish33]

i would check all ur cooler hose clamps just make sure everything is done up firm, nothing loose

[engo]

i would check all ur cooler hose clamps just make sure everything is done up firm, nothing loose

i just put on big truck clamps and new silicon joins...absolutely no leaks what so ever... hmmm.. this one has me stumped.. it sometimes does it and other times doesnt... hmmm... it always seems to do it though if i pump 1st and into second...then it does it at about 5000rpm..... AAARRRGGGG!!!!!

[engo]

BOOST SPIKE PEOPLES!!!!!!...... ONCE I FIXED THE EXT. GATES GASKETS.. IT WAS OVER BOOSTING AND ONCE I DROPPED IT BACK THE SET/GAIN WAS SET TO CLOE TO THE PSI VALUES!!!..... SO YER ALL SORTED OUT!!!

THANKS FOR YOUR REPLIES!!!