let me know what you think about this: scion xb with an intake, headers, and supercharger. i don't want to change to an aftermarket exhaust because i want it to look like a total sleeper. will the lack of an aftermarket exhaust system hamper the performance of the supercharger? i don't know what brand of supercharger i want, but i think blitz will be the one. any ideas on this?

 

I think the whine of the supercharger will give it away. Why invest in one and possibly hamper its performance? Go all the way.

 

What are you going to be sleeping from? Even with the Blitz kit about the only thing you'll be running away from are minivans and big rigs.

 

Hope you are joking. If not you don't know much about cars. With that combo and an exhaust he will be putting down close to 170whp.

Know let's review: Honda Civic Si, 2850lbs, 166HP= ~142 whp, runs the 1/4 mile in 15.5-15.8.

Scion xB with 170 whp, 2400lbs: Weighs 400lbs less and 30whp more. That equates to ~high 14's to low 15's easy.

Know looking at all the cars out there....that will put a good fight to a lot of them. Especially when they don't expect it. Toital sleeper.

Now go a step farther....when cams come out, custom tuned pcm and a 25 shot of nitrous, forged pistons.....and so on....at 2400lbs it can be very fast.

 

Well from your quote you are presuming a 15% drive train loss so with your guesstimate of 170whp then it would bring the hp at the fly to ~200hp with a supercharger, intake, header and exhaust.

I definitely have to say no way unless you plan on boosting alot. I think realistically 170hp would be to the flywheel and not to the wheels with all those upgrades.

This is based upon the optimal output so far from most SC kits for our engines having been around 120-130 to the wheels. So where does the other ~40whp come from? Doubt its from just a I/H/E.

 

I don't think with 4.5 - 8.5 lbs of boost you'll hear too much of a whine...

170whp is wishful thinking.... I am estimating on a good reliable kit we'll be lucky to see 135 - 150 whp. Toyota motors are known for being able to handle boosted applications however... but tuning is the key... Let's hope our internals can handle 170whp =D

 

thanks for the replies guys. realistically, all i wanted was about 150hp. i know it's not much, but it's enough for me. the reason i want it to be sleep is, i don't want anyone calling me out to race. i had a civic before, naturally aspirated, all motor. and i couldn't go anywhere without attracting attention and racers.

 

damn dude .. all i want is some rims ...

 

i feel you on that...rims someday they will come...some day

brent