OK guys, I have a Greddy kit on my Z along with the E-01 and blue e-manage. This weekend i'm having a return fuel system installed along with a J&S safegaurd. The shop installing did blue s/c Z with a J&S and the car peaked at 9-10psi and ran great and is still running great. These guys can tune VERY WELL. Sherif you might know the RTC crew from Lexington KY.

With that set-up what kind of boost levels can i run that are safe? I'd love to go to a least 9 psi. done some searching but couldn't find exactly what i was looking for.

I'm on a stock block of course.

 

There are several people running 450whp on a stock block without problems. Some are going on 10K plus miles. 1 year ago it was thought that 380-400whp was the maximum a block could take but we are seeing different now. So if you keep it under 450whp you should be good provided the tune is good. So boost it up until you hit 450whp. BTW, some dynos read lower than others so you may want to factor that in as well when shooting for your whp goal. If you are tunning on a mustang dyno I wouldn't pass 410whp or so as they usually read lower.

Also if you are using the out of the box greddy emanage, I would recommend you get the map pressure sensor and tune via map instead of maf once you go past 7 or 8 psi.

 

Hey thanks man for in the advice. I'm there going to tune on a dyno dynamic. I made 407 rwhp last time off of 6.5 psi. ( dynoject correction) I'd love to make 450rwhp

 

I would shoot for 410-420whp on a dyno dynamics without the correction.

 

cool. They were telling my if go 400rwhp on there dyno.. thats making good power. i can't wait!! Now i just need some good tires

 

I am having the HKS FCON installed on Monday and the car will be retuned on a dyno dynamics on Tuesday. I am only going up to 11 or 12psi. I have a built motor, but it's not sleeved and I am concerned about head lift.

 

WOW. Let me know how that goes man. from what i understand dyno dynamics are pretty good dyno to tune on.

 

is it me or im not understanding you made 407 rwhp out of only 6.5 pounds thats alot of power considering the boost what other mods do you have

 

I forgot 1 thing. If you are still running the 440 injectors then I wouldn't push the whp I told you earlier. The industry standard is 80% of what they are rated for, but a lot of people are pushing them further than 80% by running a higher fuel pressure. I did this before and will personally never do it again as it was one of the many reasons why I fuked up built motor #1. I am on built motor #2 now and the only reason there might be a #3 is because I am going back for sleeves.

 

thats what i wanted to hear jorge put some sleeves on that sucker and crank that boost up to much money not to able to have high horsepower i hope it goes good and call me for the tuning date coming up

 

Good luck with Mark, should go great. He is finishing my car as soon as he returns next week. Let us know how much better it runs for you.

 

I hit 398 on stock boost (5.5) and hit 421 on 6 psi on a rev up with spacer, 750cc's, and APS 2.5" exhaust.

 

so the rev up motor is that much better

 

Thanks. They shipped my stuff overnight this afternoon. I should have a FCON in my hands tomorrow.

 

I wouldn't say that; however, it does have 13 more hp off the showroom floor. That would obviously account for something. Other than that, I do know that the cams are very different. The Skunk2 spacer I have makes a difference I am sure, don't know what because it all went in at the same time. The lower plenum is also different. It could be soley because the air/fuel flow through the rev up is more efficient. If you put all of the exact same stuff (greddy TT etc) on both motors, I can't tell you what the difference would be if any. It would be nice if a shop would experiment on it though.

 

o ok thanks

 

Wouldn't that be almost 500 hp corrected?

 

About 450-460whp with a 10% correction factor.