Twin engine GTP project progress thread

[TwinV6GTP]

ok. i want a turbo now, f this damn m90 blower lol

are you in second gear full time? like no 3 rd either? the tach is always way up there. if not at red line, one stout parts car!

The speedo is off it's been calibrated for 23" tires (slicks) but I'm running 26" tires in the video above (so it reads low)
I believe it shifted in the longer runs into 3rd gear.
I make it shift early via shifter from 2nd to 3rd gear.

It never goes into 1st gear there is an issue with the solenoid inside the trans got a code
(it happened right after we got done working on the car, it ran perfect before, not sure what happened)
But I think I might leave it like that, I got PLENTY power to spin my slicks in 2nd gear and I don't lose time in the shift. Also could be easier on the input shaft as there is shock load between the 1st and 2nd gear shift.

It has so much torque it feels like a CVT transmission from a turbo sled. Endless pull at any RPM , instant boost too much fun.

[TwinV6GTP]

BTW the M90 is junk compared to a turbo. It's not even fair.
Lots of HP loss through the supercharger and heat created. I have a massive intercooler on this one and the air intake pipe is COLD, not warm, cold, after running the car hard.

[Scottydoggs]

BTW the M90 is junk compared to a turbo. It's not even fair.
Lots of HP loss through the supercharger and heat created. I have a massive intercooler on this one and the air intake pipe is COLD, not warm, cold, after running the car hard.

im fully aware its apples and oranges. clearly oranges are taster lol

[TwinV6GTP]

im fully aware its apples and oranges. clearly oranges are taster lol

Anyone who knows turbos and superchargers know it's apples to oranges BUT...
We just did back to back changes with very little upgrade. Many upgrade cams, headers change tunes, change MAF, change injectors.
We kept almost everything the same. We see the true difference.
It's night and day. I mean, I feel like at the same boost we make 150HP more.

I expected an easy 75HP gain from the turbo at the same boost but expected 20psi + to really start getting solid performance.
Nope. Stock cams, stock heads, stock block, stock manifolds. (modified mid pipe)