33 Low Dyno Power - Solved

[vault13]

Hey ya'all

This is the third installment in the gripping series about my 33 being a slacker.

Previous post:

http://www.skylinesaustralia.com/forums/t1...45#entry3359445

My mods are now...

Turbo back 3" X-force exhaust

Cooling Pro Type 2 Front Mount - Thermal wrapped piping to manifold

Silicone Inlet Pipe

Aftermarket actuator set for ~11/12 psi

Hitachi H8 chipped ECU.

Enlarged snorkel to fit IC piping + Apexi panel filter

Front strut brace

Tomei Replacement fuel pump

S2 AFM

After sending Kubota's chip back to him, which was probably actually a great tune I replaced the fuel pump and borrowed a S2 AFM on long term loan from Brett (BAMR33), thanks Brett! I also had a performance shop which will go unnamed adjust the ignition timing back to stock.

Today I had the guys at Auto Tech Toowoomba give her a run on the dyno and she made about 181kw, an improvement but still less than I expected. They then checked the ignition timing to discover it was 6 degrees retarded from stock...after the timing was rectified this was the dyno result.

So it was either the AFM or the fuel pump as most people had suggested.

I'm not sure which one it was as I changed both, but I suspect they were both dodgy.

I'm also presenting this as evidence that pre-tuned/chipped ECUs can get results.

Although I can only vouch for this Hitachi chipped one I bought from SECURITY, who apparently bought from MANWHORE.

Unfortunately I can not suggest where to get the socket modified ECUs, maybe somebody knows.

I do have the email address of a Sydney tuner who can pre-tune and send you a H8 chip for $250 if you can get hold of the socket modified ECU, he goes by the name of Kubota.

[email protected]

His english is a bit difficult to decipher but he's good to deal with.

As far as how the car feels to drive now, it seems to pull a bit harder at high revs, but to be honest it still feels slack off the mark, even though the boost peaks at 12psi quickly.

Comments are welcome!

Edited November 6, 2007 by vault13

[BAMR33]

That's a great result, 200kW is as much as you'd want from the stock turbo. Pretty surprised at the AFR's, usually with pre-tuned chips they are all over the place.

[WogsRus]

H8 chip that is the BIG square one, if so i am VERY interested i have a CENTRAL 20 ecu making 217 rwk on stock turbo. Looking at doing some more programing to get the tune right