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Discussion Starter · #1 ·
TURBO or SUPERCHARGER I've heard diff stories about both. I have a forte koup ex model automatic im just looking for abit more jam. I heard a supercharger is the way to go for a auto since the turbo gets it power from the 3 to 4k rpm range where SP would be direct. Im honestly not sure and have no idea if i could get soem help of what i would need like a cold air intake system or maybe a tourqe converter. Any help would be great and if u know a ballpark hp gain that would be killer too.
Just not sure whats better for a automatic.
Thanks
 

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just do what I did... stick a NOS bottle on it
 

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Patience grasshopper ! A turbo kit is being developed and i'm sure TC at NGM will have a s/c kit developed for the Theta . Who needs a warranty right .
 

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The torque and instant power of a supercharge are cool. The trill with a turbo it's when it kick in,WOW!! Nerver try NOx but it's surely the cheapest HP gain!!!
Choose your drug!!!
 

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I'm not to familiar with superchargers in for a boosted application. If you go with a turbo you are not so limited if you are not happy with the power derived from the supercharger. With the turbo you can simply swap the turbo or change your AR to increase or decrease hp. Again we would have to see what type of management software is used for the Forte to make the changing the turbo easily and manageable. I have not had much time to go over my Koup or my wifes sedan but from a quick look the turbo would seem easier task to accomplish based on space. Since the car in NA you will have to be very careful on how much boost you can run, need to look in the manual to see what the current compression ratio is. Then you need to factor the loss of warranty, and what the limits are of the stock clutch, axles, which may need to be upgraded. Also does the turbo kit require fuel rail, injectors, larger fuel pump? Proper sizing of the waste gate and design of the manifold to keep boost creep under control and running premium octane all the time.
 

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Discussion Starter · #9 ·
Wow ty for all the responses, i really am not a car guy and really had no idea how much there was into upgrading. Maybe ill just stick with a cold air intake, cat back system and maybe some new shoes more agressive rubber. I really was thinking and voiding that warranty hurts. Any other upgrades u can think of offhand that would not void the warranty. I heard exhaust does but im not sure?

Thanks again
 

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Hello KoupsCanada,

If you are concerned about any part voiding the warranty I always infer back to the dealer before making any modifications. If you are interested in boosted or supercharged cars, I would always recommend to pick up a cheap car used car, 240sx, civc, etc and experiment with that. That way you do not need to keep insured till you have it running and worked out all the new issues that pop-up along the way.
And if you go with obd1 vehicle you will not need to pay someone $200+ dollars to pass your vehicle inspection. There appears to be one company working on a turbo kit, and it may be carb compliant and plug and play install. I would not attempt a turbo upgrade on your forte if that is you only vehicle. At this moment the car is to new and the limitations of the vehicle are unknown. It would be best to wait to see the troubles others have with with the turbo or supercharger on a Forte.
 

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I would recommend against any such upgrades as well. You've purchased a new car. For the cost of installing a turbo, you could've bought a car with more oomph to begin with. For half the price of my EX, I could've had a 2005 Volvo S40 or 2006 Saab 9-3 turbo, both around 70,000km. They are both a hell of a lot more fun to drive. I went for the Forte EX because it was "good enough" (i.e. not too boring) to drive, but I wanted a new vehicle that sipped fuel, was comfortable enough, looked nice and had an awesome warranty.

That being said, it's your money and you're free to do as you choose, but I'd back Supra97 on this and suggest you get a used car and tune it for performance if you must have a toy.
 

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Not only would you be sinking a lot of money into the parts, labor and tuning, but you'd also be kissing the value of your ENTIRE powertrain warranty goodbye. If you want a fun toy to boost and play with, find yourself a last-gen 240SX and mod it to your heart's desire. They accept boost well and are a well balanced RWD setup.
 

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But on the other hand, who wants to have the same toys as someone else? Having the first of anything is always a good feeling. Or at least having something that people haven't seen before.
 

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The ultimate toy for me would have to be the Saturn Sky Redline/Pontiac Solstice GXP. I had a Redline for a weekend and they had to pry the keys out of my hands. But then again, I prefer factory engineered performance (usually things don't go wrong as often). Solstice GXP (under 30,000km/19,000mi) is about C$20,000 in Ontario. The Sky Redline is about C$27,000. Both are cheaper than modding a brand new car fr performance, and both come with the balance of factory warranty.

Sure, they're not daily drivers, but what performance car is?
 

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I think I'd prefer a Mallett Solstice with the Turbo LS7 package:
Turbocharged LS7 Package
  • 900HP Turbocharged LS7 Engine
  • Dry Sump Oil System
  • 6-speed Tremec Transmission
  • 3.73 Differential
  • Custom Built Drive Shaft
  • Custom Built Half Shafts
  • 750HP Rear Wheel
 

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I think I'd prefer a Mallett Solstice with the Turbo LS7 package:

Turbocharged LS7 Package
  • 900HP Turbocharged LS7 Engine
  • Dry Sump Oil System
  • 6-speed Tremec Transmission
  • 3.73 Differential
  • Custom Built Drive Shaft
  • Custom Built Half Shafts
  • 750HP Rear Wheel

Even with a racelogic installed that car would be a handfull to drive and would require all of your attention at all times. Short wheel and small tires would certainly ad to snap oversteer issues. Comparing to the supra I would say you would not have decent traction to well over 100mph. I could break loose going into 4th around 120mph on highboost and that was on 325 rears. Even with the racelogic I would loose to most any car from a stand still till 45-60mph due to traction issues.
 

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But on the other hand, who wants to have the same toys as someone else? Having the first of anything is always a good feeling. Or at least having something that people haven't seen before.
YES! I plan on turboing this car, and it will be my daily driver for several more years. Wife is going to get a soul, and we may think about getting a small suv for trips and family stuff, but I will be driving a boosted forte every day=] My friend heard the same spiel about not touching the car when he got his 07 corolla s, brand new. He started out running 8psi and now hes running 14psi daily driving, not a single problem still, and this is after 25k miles + with a turbocharger. Nothing but regular maintenance, a little bit of common sense and caution, and a really good tune will help you keep the car in great shape while you have a lot of fun with it at the same time.
I'm going to automotive school, so I'm not really worrying about the warranty too much, I get good discounts there and will be able to do most of the work myself.

I really can't wait to have this car turbo'd, it will surprise so many people, as its already a decently quick car stock. Thsi is going to be an amazing sleeper car=]
but if you really are that worried abotu the warranty, you should maybe find a 90's mr2 turbo, usually less than 8k in great condition, and mod the hell out of it, that was one of the options I weighed as well.
Having something nobody even knows about or expects is amazing though. Kinda like blowing away civics, and seeing their faces when they see the KIA badge on the back after hearing this exhaust=]
 

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You could do both .

Here is pic of a dd Tib with a NGM Stealth turbo and NGM Sniper s/c . He was using the s/c at low boost to help spool the turbo and a small 50 shot of nitrous to help cool the intake charge to protect against detonation .

He was tuning it with a Mafterburner at the time i believe so he had no control of ignition timing .

You can see a portion of the turbine in the open driver side headlite housing .
 

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