My power is on a dyno jet if it was on a mustang if I had to take a guess more in the 410-420 range.Sounds like you have a pretty strong car time for some upgrades man.

The thing that bugs me about your car is your dyno jet SAE numbers compared to what my SAE number were.

oh i see, then we are almost close, thats nice to hear thanks!

well ive finally tuned it got some more parts installed, swift springs, whiteline sways, h&r spacers. im pushing 451 whp dont remember the torque 9.1psi, im getting some codes - multiple misfires, and o2 sensor codes. any thoughts?

i see alot of people tune their supercharge 370z with 91 or 93. is it ok to use 98? i would assume you would get better performance. also with the new impeller whats the difference between the clockwise and anti clockwise, and please dont say one spins clockwise and the other anti clockwise lol. which one suits the stillen kit?

I would take the car back to the person that tuned your car. Check the plugs for the misfires codes. If you installed test pipes without tricking your 02 senors this would throw a code for that.


Hey Reldas the higher octane that you use the better it will be to prevent knock.

Hey Reldas the higher octane that you use the better it will be to prevent knock.[/QUOTE]

The problem I see here is that if you tune for 98 octane you would have to always run that octane or you would have problems. And I have not checked the price of 98 recently but I am sure that would be expensive to run all the time increasing your HP to $ ratio.

i always run 98, cost me $1.50 a litre he in australia. 95 cost me $1.30 so extra 20c. is worth it

That makes a difference. here in the states 93 is what you find most common and to get the higher octane you must drive out of your way to get it and it also costs on average 1-2$ more per gallon.

here we have 91 95 and 98 at every petrol station

That must be nice. I would have to drive 20min to get the higher stuff. With using 98 you should be seeing at least 10WHP or more over what others are getting with 93. All I would wonder about is running higher than 93 all the time would it mess up anything. This is about the time the smart guys on here need to chime in.

His 98 is comparable to our 93 I believe.

Yes - see post #279 in this thread:

http://www.the370z.com/forced-induct...elease-19.html

so bob, if our 98 fuel is rated at 98 RON, thats comparable to you 93?

RCZ loved his kit so much, he sold it about a year after.