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Rb25det Running Crazy Rich

NA_Goodness

By NA_Goodness,
in Engines & Forced Induction

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NA_Goodness Grand Master

NA_Goodness

Posted
Posted

Hey guys, went to an SAUWA Dyno Day today, and the dyno print out showed some interesting results. The A/F ratio dived down below 10:1 and sat on the bottom of the graph for he magority of the run. The owner of the workshop had a look at it and reckons something is seriously wrong with it. Would explain the fuel usage recently. Any ideas what might be causing it? I would take it back to the workshop, but I dont trust them touching my car. No offence to them.

The car is a 1996 R33 GTSt with high flow turbo, full exhaust, intercooler, remapped ECU, stock BOV, Spitfire coil packs, 18psi through a Greddy Profec B Spec II.

Any ideas?

Rhys

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Pal Veteran

Pal

Posted
Posted

Hey Ryhs,

I had the same problem where due to the heat today at the dyno (38degree day) my power fc chucked a whole heap of fuel in to stop it pinging and i ended up 60hp less than normal and afrs in the 10's instead of the normal 12's

NA_Goodness Grand Master

NA_Goodness

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Hmmm. So you reckon getting it checked on another dyno when its cooler? Like I said before, I'd buy a car and parts off Alistair, but I wouldnt trust him with my car. Possible he's trying to scam money off new customers?

Traitor7 Enthusiast

Traitor7

Posted
Posted
Hmmm. So you reckon getting it checked on another dyno when its cooler? Like I said before, I'd buy a car and parts off Alistair, but I wouldnt trust him with my car. Possible he's trying to scam money off new customers?

Take it to another workshop to get it dyno'd that you do trust and see if the readings are the same?

Do it on a day without so much heat..

R32 Driver Mentor

R32 Driver

Posted
Posted

Hey Rhys,

My mate went to the same dyno day and he pulled a low 300 when it normally pulls 400hp

his was tuned by autoworx so i dont think its the dyno reading low, his AFR also dropped down into 10s

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