Don't know if it matters. But on that day that i traped 113 tire pressure was 18psi front 22psi rear

 

at your hp in your car you may not see the effect of it as much if you more hp and when drag becomes a problem. 100-110mph is when drag needs to be looked at a lot more.

 

Well we will see. Englishtown re opens in march. all im changing is the tires to oem size. And see if the trap goes up.

 

are you tires now taller then the stock ones? if so you deff will get a better et time and mph should go up a little. reason beening is your not even making out the 4th gear. and you can rev it out to 8300 on stock head. {thumbup** best of luck

 

They are actual smaller then the stocks.

255/40/17 = 25.0 in Diameter - 78.6 in Circumference
vs
235/45/17 = 25.3 in Diameter - 79.6 in Circumference

So going back to stock will raise the gearing. The trick is to setup the gearing so you hit the traps right at peak hp.

 

1st through 3rd i was shifting at 7500rpm by the end of the track in 4th gear i was hitting my rev limiter 7850rpm

 

rev to 8000 and shift

 

I might just try that

 

that explains why i have to shift faster.

 

Whats the fastest times you guys seen with the power im making?

 

bump

 

You can try a 245/45R17, these are slightly bigger than the stock 235/45/R17's. This would help raise the gearing!

 

Thank you for the advice

 

This is correct, more surface area will cause drag.