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Car gets delivered next week. 2002 with a comptech blower.
Ive been away from S2ks for 14 years. My old S2k had the CT blower and a proflow throttle body, nothing else. Whats changed since then? Anything I should be looking at in terms of bang for the buck mods? My old car used to heatsoak pretty badly in stop and go traffic, the ported throttle body made a big difference. Anything I can/should throw at the car as it sits? Tune? Manifold, etc?
Car arrived last night. Its mint. Blast to drive, I had to recalibrate completely. Im used to shifting much sooner in the other cars.
It comes on really strong passed 6k.
What are my options to enhance midrange? Im not looking to do gears. Still thinking manifold/tb/heat exchanger? The car does not have an aftercooler but I dont plan to track it or subject it to very aggressive, sustained driving, so not sure if I really need it?
Smaller pulley and a wastegate on the intake piping? That'll help mid-range as long as you have enough compressor to not completely turn into a hair drier up top.
^This right here.
Add and aftercooler and you'll easily hit 500whp on a stock exhaust and test pipe. It''ll also help your mid range.
Example below:
You're not going to get terribly much below 5k. You have to go turbo for that. However with the aforementioned upgrades the dyno below is easily attainable. I'm getting belt slip up top as well. Upgrading to 8 rib to remedy that, and the motor may touch 550.
Edit: didn't see you didn't want E85. So forget all that I wrote, but I think the dyno below is still a good example to illustrate how much you could expect in the mid range if you wanted to over spin the blower and bleed boost. This blower is spinning to 53k.
Last edited by bruthaboost; 03-01-2019 at 12:20 PM.
Car arrived last night. Its mint. Blast to drive, I had to recalibrate completely. Im used to shifting much sooner in the other cars.
It comes on really strong passed 6k.
What are my options to enhance midrange? Im not looking to do gears. Still thinking manifold/tb/heat exchanger? The car does not have an aftercooler but I dont plan to track it or subject it to very aggressive, sustained driving, so not sure if I really need it?
I wouldn't run it without an aftercooler or fmic. Terrible performance and IAT will be through the roof on a summer day driving in town, or any spirited driving and cause the motor to want to detonate pretty easy at that point. Remember, if this is a base stage 1 system (which is sounds like it is) then there is no timing retard to compensate for high IAT. Until you address this, don't bother with bolt on mods for even more power or more boost. Once you get that accomplished then it depends on how far you want to take it/power you want. If you want to stay with the same stage 1 set up/rrfpr then you can get a VAFC NEO and lower vtec to increase mid range power and in doing so will need to increase the fuel pressure to add more fuel in the mid range with the new lowered vtec and trim fuel down low and up on top to compensate where it will be apparent its needed at that point. But before this you need to invest in a wideband/afr gauge so you can see your afr and properly street tune it. Next level, full EMS. At that point you might as well up the boost and get bigger injectors and ditch the rrfpr. You will need a clutch beyond about 8psi though so keep that in mind as well. But again, none of this until you get an aftercooler or fmic to keep IAT in check.
Last edited by s2000Junky; 03-01-2019 at 11:37 AM.
I wouldn't run it without an aftercooler or fmic. Terrible performance and IAT will be through the roof on a summer day driving in town, or any spirited driving and cause the motor to want to detonate pretty easy at that point. Remember, if this is a base stage 1 system (which is sounds like it is) then there is no timing retard to compensate for high IAT. Until you address this, don't bother with bolt on mods for even more power or more boost. Once you get that accomplished then it depends on how far you want to take it/power you want. If you want to stay with the same stage 1 set up/rrfpr then you can get a VAFC NEO and lower vtec to increase mid range power and in doing so will need to increase the fuel pressure to add more fuel in the mid range with the new lowered vtec and trim fuel down low and up on top to compensate where it will be apparent its needed at that point. But before this you need to invest in a wideband/afr gauge so you can see your afr and properly street tune it. Next level, full EMS. At that point you might as well up the boost and get bigger injectors and ditch the rrfpr. You will need a clutch beyond about 8psi though so keep that in mind as well. But again, none of this until you get an aftercooler or fmic to keep IAT in check.
Is ditching the rrfpr with an AEM ems and swapping them back in the future easily done? Would any adjustments need to be made after the swap and going to stock injectors?
02-26-2019, 05:17 PM
