I'm with Ryan, I was at 405whp with my comptech kit and had no issues with my 255s. Hmmm again I never felt the car was that fast until over 6k. Still ran high 12s at the track but never mad me happy. That's why I switched to a turbo setup.

 

405whp is pretty good for a comptech kit assuming a dynojet, however its still a novi1000, its not the best representation of current supercharger capability’s. Couple that with an f20 and they do feel a bit limp under 6krpm, yes.

 

Yea...that definitely helps.

My dynos for reference...

 

Sigh, all this would change with a properly produced cold-side twin screw kit. No longer would the argument always be, throttle response and reliability vs low-end power, etc.

 

Oh...no disagreement here Sir! A nice Eaton TVS 1320 or possibly larger, making 450whp+ would be perfect!

 

Perhaps, but I don't know why everyone is in love with the cold side part. Hot side is not ideal, but it is pretty easy to produce a kit without a custom manifold and you can do a far better job of cooling the intake charge with when you don't have to sandwich all your cooling into a three inch space. I upgraded my old SOT kit to a 10inch barrel from the 6 inch that came with it and even though my filter is gulping air right over the header, the intake charge is not that far from ambient temps. And a few people just put NACA ducts to the filter through the hood.

The whole coldside idea is going to be super expensive to produce over a hotside.

I only make 305 at 6psi on the TVS900 hotside, but someone fit a TVS1320 on the hotside a while back. I am spinning the blower to max but with stock cat and exhaust, so a teensie bit more power can be had, but I have 200lbft at any rpm, an AP2 with the same blower (which can produce 1psi over an AP1 at max blower speed) would have about 230 at any rpm.

I posted this the other day just to show blower whine but you can see on the tach the tires are pretty easy to spin at will in first and if you are hard on it second as well.

https://www.youtube.com/watch?v=zo1YarPkT2U

I get coldside has advantages, but seriously, when you mount hotside you need brackets and some plumbing, no big tooling for a manifold. It is the whole idea of coldside and the cost that keeps a kit from being made. No need to reinvent the wheel, plus whatever manifold you come up with to do adequate aftercooling is probably going to cost you some power because it will be done to fit and not maximize flow.

 

I'd buy a tvs blower setup capable of 450whp in a heartbeat!! Even 400whp I'd probably still go with it as long as it held well to redline!

 

450 to 500 would be my poison.

 

Building into the manifold with after cooler integrated is how most kits for m3's and such are done but it can be done mounted under the IM and keep the factory IM but then you are left trying to find blower with intake on same side as the output (rare but I've seen them) or have the intake in the firewall again. Of course when mounted under the IM, you are left with a U shape bend or modified aftercooler like on the SOS kit that can feed the throttle body in tight space and basically like a U shape out of blower and then into the TB. So to keep costs down, there are ways to skip custom manifold but you definitely have to be creative. Hot side is fine too as you pointed out but if someone could mass produce a tvs1320 or even better twin screw kit with proper aftercooler we'd be looking at 400whp and instant torque anywhere.