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Why is my car holding back?

leb

By leb,
in General Automotive Discussion

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rance Contributor

rance

Posted
Posted
thats what i would be guessing, aren't sr20's low revving engines? I haven't driven many, but thats what i'm thinking

i'd say if you wanted it be pulling still at those revs then you should've bought a skyline, feel free to correct me if i'm wrong though

not sure how high skylines revs ..but my car (s13) happily reves over 7500rpm hitting just over 10psi in my stock turbo

my strongest gears are 2nd and 3rd ...but as ppl said it is a 2L ..but it should still pull

4th gear is designed for higher speeds, not maximum torque..so if ur on a uphill still fighting for torque, try dumping it back to 3rd..and redline it :P

race_snooze Grand Master

race_snooze

Posted
Posted

boost leak is not just in the turbo housings, you may find them on some of the pipine, go around and tighten all induction piping, look for oil leaks on pipes due to blowback.

Just go over every thing logicaly. Boost leak = piping, sprakplug gaps, coils really blocked air filter say you have a big fat rat in there when you boost no air for the motor = no power.

Slipping clutch.

last thing i can think of is it simply was to big of a hill and the poor car ran out of puff.

Oh one more thing, stock bov and internal gate check to see if they are stuck open.

See if you can get to full boost on flat road, after checking everything else.

another thing turbo may be d o a.

KILL HSV Proficient

KILL HSV

Posted
Posted
not sure how high skylines revs ..but my car (s13) happily reves over 7500rpm hitting just over 10psi in my stock turbo

my strongest gears are 2nd and 3rd ...but as ppl said it is a 2L ..but it should still pull

4th gear is designed for higher speeds, not maximum torque..so if ur on a uphill still fighting for torque, try dumping it back to 3rd..and redline it :(

is that an sr20 or a ca18?

Dee 33 Community Regular

Dee 33

Posted
Posted

The car would not run out of puff up a hill in 3rd after pulling itself up to 5000rpm.

If it can pull up to 5000rpm then it should be able to keep going. We're talking 3rd gear here guys in a turbo. If anything, power should increase as the revs raise and yes, they may start to drop off after 5000rpm but they won't drop so much that the car can no longer accelerate up a hill. If it can pull from 3000 to 5000 up the hill, then it's not going to stop suddenly at 5000.

I'd be guessing some kind of limiter for sure. Boost leak, overboost causing boost/fuelcut perhaps. But not the hill. If it was the hill, he'd know it.

leb Community Regular

leb

Posted
  • Author
Posted

I had a mate of mine who use to have an s15 to have a look at it.

He was saying it probably wouldnt be a boost leak because you'd hear it at 5000rpm if there was.

its running stock boost so i doubt it would overboost or "spike" from anything.

I think it might need a better airflow system (as it has stock filters and exhaust)

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