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| Posted by |
hoss on May 30, 2003 at 11:34 AM |
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This message has been viewed 76 times. |
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| In Reply To |
Newb Question/free mods? posted by 93SCTT on May 30, 2003 at 11:21 AM |
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| Message |
from: [ http://www.twinturbo.net/ttnetfaq/appendixz.aspx#Stages ] This is the standard benchmark Twinturbo Z stage chart. Most people use this as their performance upgrade path:
| Stages: |
Modifications Required: |
Approximate M-T HP at Flywheel & Boost Pressure |
| Stock |
None |
300hp 9.5 psi |
| Stage I |
Performance cat-back exhaust system |
320hp 10 psi |
| Stage II |
High flow intake |
340hp 10.5 psi |
| Stage III |
ECU EPROM upgrade & boost jets |
396hp 13.5 psi |
| Stage IV |
Larger intercoolers |
405hp 13.5 psi |
| Stage V |
EVC |
418hp 14.5 psi |
| Stage VI |
555cc injectors & 550 type turbo upgrade |
445-500hp 16.5 psi |
| Stage VII |
Dual high flow intake |
520hp 16.5 psi |
| Stage VIII |
600 type turbo upgrade |
620hp variable psi |
| Stage IX |
NOS |
680-760hp variable psi |
This standard stage chart is a bit dated. SGP Performance has made an updated TT chart to include newer modifications & rearranged a few of the steps in their performance upgrade path. On the forum, you'll see this noted as SGP Stage ????. Stages: | Modifications Required: | Approximate M-T HP at Flywheel & Boost Pressure | Stock | None | 300hp 9.5 psi | Stage I | JWT POP charger & Underdrive pulley | 305-325 hp 10 psi | Stage II | JWT ECU upgrade & boost jets | 365-380 hp 12-14 psi | Stage III | B&B test pipes & Gut pre-cats | 385-400 hp 12-14 psi | Stage IV | Performance cat-back exhaust system | 400-415 hp 12-14 psi | Stage V | EVC | 420-435 hp 15 psi | Stage VI | JWT NOS system | 490-505 hp 15 psi | Stage VII | Larger intercoolers | 495-510 hp 15 psi | Stage VIII | JWT dual POP charger | 510-525 hp 15 psi | Stage IX | Ported throttle bodies & Matched intake | 515-530 hp 15 psi | Stage X | NISMO 555cc injectors | 530-545 hp 17 psi | Stage XI | Sport 500 turbos Sport 600 turbos Sport 650 turbos (cam upgrade required) | 555-575 hp 17-21 psi 560-605 hp 17-21 psi 620-675 hp 17-21 psi | Stage XII | JWT cams & SGP head package | 640-695 hp 17-21 psi |
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