The drop off is due to boost dropping off in the upper RPM and causing a break up due to over fueling and water meth mix. Not sure of the AFR or EGT's. Didnt have anything hooked up. I will be going back with a upgraded internal wastegate and maybe an safc to try for 250whp.

Minimal things done...

Stock turbo
Stock motor (never opened, unknown milage)
Stock ECU (chipped by pan-speed, No idea what has been changed???)
Stock top mount intercooler (modified by me)
Home made intake, 2.5"
Home made 3 inch exhaust/DP
Port and polished manifolds and TB by me

1st run: 3rd gear with water/meth
2nd run: 4th gear with water/meth
3rd run: 3rd gear no water meth

 

Congrats! Good numbers man.

 

1st run:









2nd run:

 

thanks!

I was pretty impressed. And im very confident that with a new wastegate with capabilities of holding boost to the 7k+, instead of dropping off and causing the break up at 5500, i would hit around 250.

 

It would be nice to see you hit the 250 mark on minimal mods, good luck!

 

How much psi?

 

11psi but dropping off hard after 5500rpm to 6psi. thats the dip in power...

the 226.9 whp run was done it 4th gear, so i think it hit 13-14psi before dropping off also.