My built TT 370z is getting tuned today... What power can I expect?
 

Done, made 700 after upgrading full system.

If I had to make a wild-*** guess, you'd want to stop around 500whp. Going too much higher sounds sketchy to me with the fuel system you described. The good news is that you should be able to make a ****-ton more power down the line with a bigger pump/injectors/fuel return system.

Good to know :)

Yeah, for now just want the car tuned to a safe level. I'll probably get used to it in a month or so and want to push for more power. 750whp on pump was the original goal, hoping to hit that with a full fuel system on 92 octane.

Who built the block? Will be in for reviews of that. We had a built block blow locally during the break in period and the builder is blaming a foreign object making it into the cylinder or timing causing the piston to hit the valve (or maybe their valve stuck and was hit by piston).

My built TT 370z is getting tuned today... What power can I expect?
 

I have a stock motor, same fuel pump and 600cc injectors. Made 550whp with no knocks. Only 10.7 lbs of boost. You should definitely be able reach 600whp, or close to it on your setup. Posting vids!?!


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Yeah, but you get better gas in Florida. I'm sure there's 600 in it, but if the plan is to later add fuel and really put that built motor to use, he might want to stop short of the ragged edge. It would really suck to pop the built motor before it can be really pushed.

You’re right. What he can hit vs what he should run are two different things lol. Gas down here ain’t bad. Most stations have 93, and E85 is gaining popularity as they build more pumps. But definitely better to tune it down to a safe number. I’ve had no issues at all where I’m at and I got tuned back in October, drove it all the way to North Carolina and back less then 12hrs after.


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Those tiny .48 a/r turbines will hold you back. With a built block you should have opted for the .63's for sure.

Your will see your torque climb hard and fast, and your HP will taper off quickly after 6k rpm when you start ramping up the boost.

His built block has lower compression than your stock block.

He won't make that, he lowered the compression from 11:1 to 9.5:1. This will be a major hurdle to overcome.

Good point. I overlooked that.


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:iagree: Also you can add that the GT-R manifold conversion will kill the power past 6k.

A shop in Langley BC (Canada) called Independent Speed Shop - they do a ton of high hp GT-R builds and just have a lot of crazy stuff come out of there.

I'll definitely ask the tuner to keep power a decent away from the limit, wherever he finds that may be once it's tuned in a few hours.

Yeah, I've thought about this - I actually didn't opt for a new turbo setup, I've just reused the original setup the car had when I bought it.

I would ideally like to push these turbos to their limit before upgrading. I'd like to hit the 700whp to 750whp mark while still maintaining the enjoyable drivability and power band this turbo setup has provided. There's very, very little lag. It was sooo fun to drive before it threw a rod.