rb25 running poorly need input

[sleepin240]

ok so after getting my guages wired up and discovering my car is not throwing any codes im wigging out...

my idle is poor however sometimes it idles good...

when i take it down the road its like it spools then its like i run into a wall when press the gas all the way down...

it does it in every gear it spools up then just fizzles off... i know your thinking boost leak ive had everything triple checked no boost leak

so what could it be.....?

on another note i would like to add that i tried unplugging the mafs to make a check light go off and it didnt... is this normal

[JonPowell]

Timing man, check your timing....unplugging the MAF's SHOULD make the CEL come on, IF you wired it up....

Ususally a boost leak will cause it to pop and spit, what you explain sounds like its not firing at the right time...

[sleepin240]

i sure did white with a red stripe its wired.... hard wired it to the cluster

[eh?]

Does runs fine under part trottle but hits a wall at full throttle @~2500rpm?

[Joe]

a "wall" is a problem. triple check all your vacuum routing. if your wastegate line isnt hooked up properly your maf will be maxing and causing a problem like you described.

also, it sounds like the engline light it wired wrong..

[sleepin240]

eh? sounds like you just nailed it thats about right part throttle is great but under full throttle around 2500 its dead

[sleepin240]

a "wall" is a problem. triple check all your vacuum routing. if your wastegate line isnt hooked up properly your maf will be maxing and causing a problem like you described.

also, it sounds like the engline light it wired wrong..

its all according to factory i labeled everyline as i took it out of the clip the only thing different is the missing charcoal box

[JonPowell]

that wouldnt effect your drivability

[leroy0053]

replace mass air flow sensor. if its fine then u about 2500-3000 rpm then your car starts jerkin, definitely maf.

[leroy0053]

oh nevermind didnt read where it said part throttle is good my bad man:(

[eh?]

You have a tps problem. Check your idle voltages at the sensor.

[sleepin240]

ok update made the ecu go into check mode... returned a 55

unplugged my mafs and couldnt make it throw a code

unplugged my CAS and got it to throw a 11....

could it be something with my mafs forcing it into safe mode?

[sleepin240]

ok another update got it to throw a code with the mafs unplugged

[eh?]

check your tps voltage..

[sleepin240]

tps reads good

[sleepin240]

ive determined my ecu is stuck in safe mode

[sleepin240]

well after reading on skylines down under i am reconsidering my safe mode theory it seems that it wont go past 3000 rpms at all mine however will rev all the way up while sitting still

[Joe]

i would look at trying to get another maf to test. sounds like its bad.

[sleepin240]

ok so i was just kiddin about that 3000 rpm at while sitting still it seems i was dreaming... i can stomp it to the floor and hold it and never get past 3000 ish

[leroy0053]

mass air flow sensor. definitely hands down.