What should I install to get about 290-300hp in a gen3 3sgte? - MR2 Owners Club Message Board
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post #1 of 8 (permalink) Old March 20th, 2017, 09:42 Thread Starter
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What should I install to get about 290-300hp in a gen3 3sgte?

I just got my first car with a gen3 3sgte. I am thinking of installing

Cold air intake
3" down pipe and exhaust
New intercooler
A boost controller

Is it possible to get 300hp with stock injectors? Do i need to have ECU tuned after all the changes? Is it safe to run 300hp in a stock turbo(CT20b)?
I am sorry if i ask too many questions. I am just new to these.

Thank you in advance to everyone.??
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post #2 of 8 (permalink) Old March 20th, 2017, 15:57
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Bone stock with cat back exhaust and boost controller at 16psi you'll be around 245whp.
Adding intercooler may gain you a few hp, intake won't really make any more power than having a K&N stock replacement filter will. A 3" downpipe should gain you 15 to 20whp.

So, boost controller, 3" downpipe, 3" exhaust system, minimum 93 octane fuel and 17psi boost you should be around 275 to 290whp. Upgrade the ct20b with billet compressor wheel and inconel turbine wheel you will be over 300whp @17psi.

Stock computer and injectors are good for 300whp no problem. Can upgrade the stock computer and generally gain 30 to 50+whp with a conservative tune. Upgrading fuel system (pump, rail, injectors, fuel lines) will allow more boost and more hp plus can also run e85 and make 50+whp with the change in fuel. Ems with flex fuel allows tuning to be done where you don't have to mess with the ecu ir tune when switching or mixing fuels.

If you don't have 93 octane available I would get the ems sooner than later

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post #3 of 8 (permalink) Old March 20th, 2017, 16:50
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^^ bang on the money. I'd just add that if 93 octane not available a decent water injection system can be used.

Make sure your engine & drive line are up to power increases as well. Basic maintenance items like ignition, fluids and filters are important but also tyre, brakes and suspension should not be over looked.

jim
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post #4 of 8 (permalink) Old March 21st, 2017, 11:28
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Some high lift cams make a massive difference on a Gen3. I'd start with making sure everything is in 100% working order. No issues with anything, no leaks, etc. Then I'd go downpipe/exhaust, boost controller, intercooler, and intake. Pretty easy to do and easy to revert back if you ever needed to. Next step would be cams/cam gears if you wanted a bit more. Anything past that really needs fuel but that recipe is a great, fun to drive, reliable car.

I wouldn't bother upgrading to the billet 20b's until your turbo goes out. If you really want to go for good power (bigger injectors, standalone, etc.) you'll want a better/bigger turbo anyhow. The stock 20b is great and I'd just rock it while it lasts at ~16-17psi.
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post #5 of 8 (permalink) Old March 21st, 2017, 22:19 Thread Starter
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Quote:
Originally Posted by mister3 View Post
Bone stock with cat back exhaust and boost controller at 16psi you'll be around 245whp.
Adding intercooler may gain you a few hp, intake won't really make any more power than having a K&N stock replacement filter will. A 3" downpipe should gain you 15 to 20whp.

So, boost controller, 3" downpipe, 3" exhaust system, minimum 93 octane fuel and 17psi boost you should be around 275 to 290whp. Upgrade the ct20b with billet compressor wheel and inconel turbine wheel you will be over 300whp @17psi.

Stock computer and injectors are good for 300whp no problem. Can upgrade the stock computer and generally gain 30 to 50+whp with a conservative tune. Upgrading fuel system (pump, rail, injectors, fuel lines) will allow more boost and more hp plus can also run e85 and make 50+whp with the change in fuel. Ems with flex fuel allows tuning to be done where you don't have to mess with the ecu ir tune when switching or mixing fuels.

If you don't have 93 octane available I would get the ems sooner than later
Sir I don't think e85 is available in my county. Even if it is available it will be really expensive. So if i upgrade the ct20b like you said do i need to change the manifolds, cams, rods and injectors?
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post #6 of 8 (permalink) Old March 21st, 2017, 22:22 Thread Starter
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Originally Posted by PearlJammzz View Post
Some high lift cams make a massive difference on a Gen3. I'd start with making sure everything is in 100% working order. No issues with anything, no leaks, etc. Then I'd go downpipe/exhaust, boost controller, intercooler, and intake. Pretty easy to do and easy to revert back if you ever needed to. Next step would be cams/cam gears if you wanted a bit more. Anything past that really needs fuel but that recipe is a great, fun to drive, reliable car.

I wouldn't bother upgrading to the billet 20b's until your turbo goes out. If you really want to go for good power (bigger injectors, standalone, etc.) you'll want a better/bigger turbo anyhow. The stock 20b is great and I'd just rock it while it lasts at ~16-17psi.
Do you think the total cost will go over 1k sir?
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post #7 of 8 (permalink) Old March 22nd, 2017, 10:06
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Quote:
Originally Posted by Kaung Khant Zaw View Post
Sir I don't think e85 is available in my county. Even if it is available it will be really expensive. So if i upgrade the ct20b like you said do i need to change the manifolds, cams, rods and injectors?
first off, where are you located?

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post #8 of 8 (permalink) Old March 24th, 2017, 09:04
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Originally Posted by Kaung Khant Zaw View Post
Do you think the total cost will go over 1k sir?

If 1k is your budget I'd get a downpipe, boost controller, and if you can an intercooler kit. That will probably take up all of your 1k budget. Downpipe will be the biggest power gain, boost control to control that power gain (if you're at sea level for instance you'll hit fuel cut. If you're at ~3k feet or greater you likely won't), and then intercooler will just help you boost safely by keeping your charge cool.

You definitely won't be able to get cams and gears but that's fine. Just the above 3 make for a really fun and reliable car while not being too expensive.
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