rampridersrider
15+ Year Contributor
- 349
- 1
- Dec 24, 2004
-
Missouri
Decided to finally get some numbers on the GSX a couple weeks ago. I was pretty surprised actually at how easily it made over 500hp with my particular setup.
Mods that matter.
Eagle/Wiseco 2.0 6 bolt
8.5:1 compression ratio
ARP headstuds with factory Failpro headgasket
Stock head and valvetrain with FP2 cams
Stock 6 bolt Intake Manifold
Stock 1g Turbo throttle body and 2g elbow
Junk Ebay intercooler
Crushed/Dodge modded 1g BOV
Junk Ebay DNP knock off exhaust manifold
7 blade HX35 with chewed up compressor wheel, w/ 12cm housing, unported and untouched
Tial 35mm wastegate
Full 3 inch exhaust with High flow cat
2g maf, FP intake
1600 cc injectors, single rewired 255 intank, stock lines and filter, E85
DSMLink
That should be everything that matters. First pull at 28 psi made 486 hp/420 tq, second pull at 29 psi made 497 hp/437 tq, then the final pull at 30 psi with 508 hp/455 tq. I have the car tuned for low tq, but the boost kept spiking to a few psi higher than set (spiked to 32 psi and settled to 30), so tq was a bit higher than I'd like. I think this is cause I'm on a 10 lb spring in my wastegate and the boost controller is having a hard time controlling the boost. This last pull started going rich up top so some slight tuning or possibly a boost leak test is in order. No big deal. Its still good to know that there is still plenty more left in this setup if need be, I don't think 550 is out of the question with a few more psi. No plans as of right now to increase the boost though. Enjoy.
I included a log of the 30 psi run as well.
YouTube - 20100709_006.mp4
Mods that matter.
Eagle/Wiseco 2.0 6 bolt
8.5:1 compression ratio
ARP headstuds with factory Failpro headgasket
Stock head and valvetrain with FP2 cams
Stock 6 bolt Intake Manifold
Stock 1g Turbo throttle body and 2g elbow
Junk Ebay intercooler
Crushed/Dodge modded 1g BOV
Junk Ebay DNP knock off exhaust manifold
7 blade HX35 with chewed up compressor wheel, w/ 12cm housing, unported and untouched
Tial 35mm wastegate
Full 3 inch exhaust with High flow cat
2g maf, FP intake
1600 cc injectors, single rewired 255 intank, stock lines and filter, E85
DSMLink
That should be everything that matters. First pull at 28 psi made 486 hp/420 tq, second pull at 29 psi made 497 hp/437 tq, then the final pull at 30 psi with 508 hp/455 tq. I have the car tuned for low tq, but the boost kept spiking to a few psi higher than set (spiked to 32 psi and settled to 30), so tq was a bit higher than I'd like. I think this is cause I'm on a 10 lb spring in my wastegate and the boost controller is having a hard time controlling the boost. This last pull started going rich up top so some slight tuning or possibly a boost leak test is in order. No big deal. Its still good to know that there is still plenty more left in this setup if need be, I don't think 550 is out of the question with a few more psi. No plans as of right now to increase the boost though. Enjoy.
I included a log of the 30 psi run as well.
YouTube - 20100709_006.mp4