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2G Will this get me a 350-400 horse GS-T?

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SpyderGS-T97

Probationary Member
13
0
May 10, 2023
Cedar City, Utah
I’m going to be buying 1000cc injectors, 16g or 20g turbo, 255LPH in tank fuel pump, DSMlink, front mount intercooler, and a balance shaft delete kit. Currently I have a Mishimoto fan shroud, ARP head and main studs, Manley Forged rods, and HKS head Gasket. Triple A-Pillar gauge cluster with boost, oil pressure, engine temp. I would like 350-450 to the wheels, what would you guys recommend? I have to tear into the motor to replace piston rings, would a forged rotating assembly help me achieve that? I’m new to the DSM community and I know that it’s way different than working on an American V8. Any information would help. I’ve seen the upgrade paths and I’ve got most of those ready to order, just wondering about setups/builds I should be aware of. 1997 Eclipse spyder GS-T, 7-bolt
 
and what does your drivetrain and exhaust setup look like? YOu didnt mention it, so just wondering how youre getting that power to the wheels and if you are doing any porting of the o2 housing or external wastegate for combating boost creep
 
If you're looking for more than 350 wheel horsepower, drop the 16g from contention.
A 16g being pushed to its limit will also create a torque spike that will blow your tires off consistently without a serious suspension setup and limited slip.
It's funny for a little bit but gets tiring after a while

Everybody shoots out numbers but have you ever driven a 400hp front wheel drive vehicle before?
 
and what does your drivetrain and exhaust setup look like? YOu didnt mention it, so just wondering how youre getting that power to the wheels and if you are doing any porting of the o2 housing or external wastegate for combating boost creep
It’s FWD, it has 225/40ZR19 tires, and it has a complete GodSnow exhaust, I’m not sure about the O2 housing being ported, I would like too if that improves the resistance of boost creep, and I forgot to mention that it has a Greddy BOV, recommendations are greatly appreciated for what parts to get
 
If you're looking for more than 350 crank horsepower, drop the 16g from contention.
A 16g being pushed to its limit will also create a torque spike that will blow your tires off consistently without a serious suspension setup and limited slip.
It's funny for a little bit but gets tiring after a while
Thank you for that info! So 20g would be better?
 
and what does your drivetrain and exhaust setup look like? YOu didnt mention it, so just wondering how youre getting that power to the wheels and if you are doing any porting of the o2 housing or external wastegate for combating boost creep
It also has an upgraded clutch, I forgot what brand, I’d have to look at my paperwork
 
Agree that 20g would be better suited to get you to your goal. With an evo16g, you would need e85 tuning to even get close. But outside of horsepower goals, I like the evo16g as a sweet spot for daily driving tho which is why Ive been rocking it for a while now. I think its a good balance of power and efficiency and feel like its the last turbo in the tier before you get into making big power where the car would REALLY need more attention and care not to break drivetrain "things". Just a personal opinion from someone who broke a lot of things in the past :D
 
20g is a good turbo and enough to stay with base model Corvette Stingrays, I know. Then I bumped up to larger frame turbos. On a 20g, I was outrunning Scat Paks at the track. That is my experience but I can't make any horsepower claims. I can provide a couple video's though.

20g vs Stingray (stock frame turbo in "Mexico")
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Larger Frame (HX40 Holset) Turbo vs Bike (in 'Mexico")
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Upgraded internals wouldn’t be necessary at all for that goal or even really help you get there, but also wouldn’t hurt for reassurance later on if you want more. With pump gas in the equation instead of e85 you won’t hit 350 on a 16g, especially if we’re talking 91 octane and not 93 octane (depending on where you live), it’s like I told another user the other day, it’d be a generous dyno for you to see that number on either of those turbos on pump gas. If e85 is in the equation then sure that wouldn’t be unrealistic at all, but talking pump gas you’d need a bit more to seal the deal.

Now if you’re willing to let go of the horsepower number idea and just let it do what it’ll do, those are 2 extremely fun turbo options. I had a lot more fun with the 16g’s I’ve had than any of the “big” turbos I’ve ran making more power, but that’s also personal opinion.
 
6 bolt stock bottom end (hell, even a stock 7 bolt) will hold your goal as far as internals go.
Sorry about the thread jack.....my bad.
Just examples from the 'net.....
 
Upgraded internals wouldn’t be necessary at all for that goal or even really help you get there, but also wouldn’t hurt for reassurance later on if you want more. With pump gas in the equation instead of e85 you won’t hit 350 on a 16g, especially if we’re talking 91 octane and not 93 octane (depending on where you live), it’s like I told another user the other day, it’d be a generous dyno for you to see that number on either of those turbos on pump gas. If e85 is in the equation then sure that wouldn’t be unrealistic at all, but talking pump gas you’d need a bit more to seal the deal.

Now if you’re willing to let go of the horsepower number idea and just let it do what it’ll do, those are 2 extremely fun turbo options. I had a lot more fun with the 16g’s I’ve had than any of the “big” turbos I’ve ran making more power, but that’s also personal opinion.
Thank you for the insight!! I’m bouncing around the idea of a PTE 5858, I’ll look more into the 16g and 20g turbos!!! Here is my build list so far of what I kind of want so I have room to grow at some point

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I can’t say much good about PTE. They make real good power, no doubt they perform well, but for the price I’d run a Chinese turbo at a fraction of the cost as PTE has about the same failure rate. If 350-450 on pump gas is your goal an FP Green or Red would get there bolted to your stock exhaust manifold with some port work even. I don’t believe PTE still offers their dsm bolt on housing but when they did it wasn’t very good and was a piss poor design (I’m not talking the old 5031 and such before anyone gets bent out of shape). Not to say a t3 set up would be bad for your goals to open up more options later, but if you’re set on staying there there’s real good bolt on options out there.
 
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