Rb25 Wont Hit Revlimiter

[aussy-boyz]

rb25 wont hit revlimiter just sits there and makes a contant miss noise, put back to stock boost still does it, tried timing still does it, fuel pressure all good, Any thing else that could cause it?? its in a s13 btw

[Manuel Kasko]

Tried welding the actuator shut?

[Ad's]

I think some r33's have rev limiter in the factory computer so you cant rev them right out! But i could be wrong.

Stock computer by any chance?

[joeyjoejoejuniorshabadoo]

what rpm does it make it to?

[tricstar]

isn't that the rev-limiter/cut, sounds like its limiting the revs

[aussy-boyz]

yeah stock computer just took it out of my 33 and the limiter bounces on that, but not on s13 sounds like its leaning out? but on stock boost

[kawasakirider]

You have a deceased amphibian in your airbox.

[Peter]

Is the tacho in the S13 reading correctly? Sounds like the ECU is hitting it's rev limiter (constant miss noise you mention). Maybe get another stock or an after market tacho and see what it reads? Something like an SAFC NEO or Greddy Infometer will also do the trick - see what the ECU is seeing.

[Miguelone]

Chuck it in neutral and hit the accelerator.

[BrynDETT]

old mate of mine had this problem when we put a 25 into his s14, would just rev up then bog down/ pop/ lose power.. definitely was NOT LIMITER..

We tried another r33 ecu which we knew worked properly, and in the s14 the problem was still there.

he had the loom checked and was all ok, so only thing that never got checked was sensors on the engine

still has the problem now, keen to know if u find out the cause..

[Global_Warmer]

Put a brick on the throttle with the transmission in neutral with the engine running. And film the engine so we can get a better idea of what's going on.

[Global_Warmer]

Put a brick on the throttle with the transmission in neutral with the engine running. And film the engine so we can get a better idea of what's going on.

[BrynDETT]

old mate of mine had this problem when we put a 25 into his s14, would just rev up then bog down/ pop/ lose power.. definitely was NOT LIMITER..

We tried another r33 ecu which we knew worked properly, and in the s14 the problem was still there.

he had the loom checked and was all ok, so only thing that never got checked was sensors on the engine

still has the problem now, keen to know if u find out the cause..

EDIT: just remembered something , if u backed up right before limiter and got on the gas again it would hit limiter normally... does urs do the same?

DOUBLE EDIT: WTF HAPPENED TO MY EDIT HAHAHAHA

Edited March 9, 2012 by BrynDETT

[syfon]

Yeah put a brick on the throttle with the car in gear and film it so we can get a better idea of what's going on.

[BrynDETT]

don't get why half the ppl on this forum give sarcastic/ useless information just because they think the topic is not worthy...

think some ppl need to need to shut up when they have nothing to say, instead of trying to get their post count up...

end rant

[KiwiRS4T]

OP could help by stating what revs he is reaching. When my S1 Stagea RB25DET was stock it maxed out at 7100.

[BrynDETT]

OP might not know wat rpms he is reaching because the s13 tacho will read 1/3 out... the needle simply goes past the gauge..

it doesnt matter what rpm its reaching, its still not working properly

[aussy-boyz]

^^^^ Correct

cheer man

[Ronin 09]

OP might not know wat rpms he is reaching because the s13 tacho will read 1/3 out... the needle simply goes past the gauge..

it doesnt matter what rpm its reaching, its still not working properly

it is pretty critical actually to know what rpm it's reaching.

the op needs to include more relevant facts if the interwebz is going to solve the issue.

otherwise take it to a real life shop with a mechanic man who can diagnose accurately from seeing the car and how the motor is running, and fix.

you can't just say "it's missing and sounds weird, please diagnose".

Edited March 9, 2012 by Ronin 09

[blind_elk]

Does fitting a 6-cylinder engine into what is normally a 4-cylinder car involve anything that faintly resembles an adjustment to the tacho so that it now calculates for a 6-spark cycle instead of a 4-spark cycle?