I am looking at FI at the end of the summer and I keep changing my mind as to what kit I want to get. Right now I have 2 options in mind and am wondering what the reliability would be like on these 2 set ups.

Option 1 ptuning kit with oil cooler and a low boost shooting for 325-350 whp and a high boost shooting for 425-450whp on 91 oct pump only no meth no E85.

Option 2 SOS kit shooting for 450 whp or what ever the "reliable" limits of the kit are with out meth or E85 just 91 pump. I have heard that is in the 14psi range.


Both options on a stock motor no hg or anything. On the first option I would drive around on low boost 75-85% of the time but I want the power on tap when ever I want it..

 

I have SOS at 14 psi and I am happy with it. But.. I keep thinking I wish I had gone TTS rotrex instead.

No off the shelf SC kit compares to a well sorted turbo kit. If you have the cash and are willing to spend time tweaking stuff then go Ptuning.

 

Both are good options. I was in the same position a few months ago. I am very happy with the ptuning kit so far it has been very reliable and well engineered.

 

They are the better kits out there. I think the SC would be a bit more reliable and would be less expensive cause you don;t need to change as many things on the car. The turbo will be faster and more fun out of the hole but will also be more complex. So if you have the time, money and maybe another car go turbo. If your funds are limited and its your daily the SC may be the better option for your personal situation. Good luck both kits are nice.

 

Supercharger is without a doubt more reliable. Turbo powerband is definitely much broader and faster at the same power levels. I would never daily a turbo'd S or take long multiple hundred mile trips in one. In my supercharged S I have taken tons of long trips in it and would not hesitate driving it across the country or anything. I've put over 25k miles on it in a little over a year now.

If only there was a good 400+hp roots type blower setup for this car would be perfect!

 

I agree....you are going to get more HP out of the Turbo. And after doing all of the reasearch, the PTuning kit is "very well sorted"

Speaking from personal experience, I had a CompTech AP1 SC kit on my car for over 25-k miles with no problems at all. Running the stock boost at 6.5-psi on a bone-stock engine. Dyno'd at 306HP. Totally reliable as a daily driver....just change the oil regularly and regular visual inspection of the belts, and engine oil-levels.

ALTHOUGH.....you mention trying to get into the "14-psi" range of boost, you are (should) be looking at additional fuel management / injectors, and tuning at that boost level. There is nothing about the S2000 motor that is simply "plug-n-play" at higher boost levels. Choosing to go that route without additional fuel / air / tuning mods is just asking for a blown motor and an outpouring of cash. Maybe not right away but it will come shortly after.

The turbo will require more "Tewaks"....and will be more costly to get into correctly.

I recently upgraded from the SC...to the PTuning kit, and am in the process of a complete engine build. So I can't speak to the exact outcome yet, but hopefully in the next couple weeks

 

^It's not even possible to go to anywhere close to 14 psi without upgrading injectors, engine management etc.

 

Very true. But oh so very well worth it!!

 

1. Your notions / perceptions about "high-boost" and added HP are completely unrealistic on a "completely stock" motor without additional mods..! Period...!

2. Without sounding overly critical, what do you mean by "you would drive around at low-boost most of the time, but then want the power on-tap when ever".......? There is no "magical" switch that can just be flipped and grow signifigant HP / Boost gians without additional costs & engine modifications.

Summary: You need to choose one or the other. (1) Lower more managable boost levels with less HP on a stock engine.....or (2) the "All-In" added fuel management, injectors, tuning, engine-build, water/meth...or some combination there of. There is no such thing as Have Your Cake And Eat It Too with what you are asking for.

You need to put some more time and thought into what you really want then take a look at your realistic budget to make your goals.

 

He certainly can have high and low boost lol. There is a "magical switch" can be tuned for both high and low boost with engine mangement.
Any turbo kit of course he is going to have fuel and engine management as it is 100% needed.
Don't need a built engine or meth for his goals at all either.
Didn't see him mention anywhere that he was going to use stock injectors as that is obviously not possible.