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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.

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..

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 by 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

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 by Ronin 09

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?

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