Best Supercharger for Moderate Gains for the Buck??
 

Hello,

First off i just want to say im a noob to force induction so pls dont flame me. my gf has a frs but we both dont like the low end torque. she had a mini cooper s (supercharged) before and she liked how it pulled in low end torque. Were thinking about going with a supercharger to compensate for the lack of it. She doesnt want to go with headers, exhaust, downpipe etc as its too loud/not her style. were not trying to make a butt load of power, just something to give a little umph in the low end (and of course high end as well). WHat is the best supercharger that fits what were looking for as well as ease of install? If anyone has advice or ideas on other routes to do what im looking for feel free to chime in! thanks

although im new to superchargers, i enjoy learning new things so i dont mind trying to do the install myself or anything like that, but if i do feel like its too much for me i dont mine having a shop do it either. money isnt an issue for us, but i want to be reasonable. (our setup were going for is a smooth/sleek/sleeper type that doesnt make a lot of noise, lol, if thats possible!)

Sounds like the innovate supercharger will be a good fit. It hasn't been released yet.

any inside info on when this will come out? do you know the hp gains/cost$ range for it as well? thanks!

nvm, found some info on this thread..

http://www.ft86club.com/forums/showthread.php?t=20441

Vortech all the way. Everything about it is as smooth and clean as stock, just like adding 2-3L to the motor.

There are only two SC options out today: Vortech and HKS. Both are centrifugal superchargers so the boost is dependent upon RPM. Think of them more like crank-based turbochargers.

A third option is still being worked on but should be available soon enough, the Innovate/Sprintex twin-screw. This is a positive displacement configuration that will bring the boost on much sooner than a centrifugal. In theory, these give you more power lower in the RPM range whereas the centrifugals will give it to you higher in the range.

Without any other mods, all of these kits will give you somewhere around 240-250WHP at peak, the twin-screw will give you more of that low-end torque that you're looking for.

This. The vortech feels a little too turbo like

tap'd

screw that, the thing has no torque!

Looking at the vortech dyno and the only innovate dyno to date, they seem to both hit the stock HP max at around 4.5 - 4.75 rpms. I think it's a little premature to say the innovate kit dominates torque versus the vortech. In theory it should, but we don't have enough data yet.

what about for ease of install, or are they all pretty much in the same category. im sure there might be a DIY on it somwhere..

Have you looked that the torque curves on those charts? The torque comes on earlier and stronger with the positive displacement kit versus the centrifugal (as we would expect). Not saying one dominates the other, but it does come on earlier and the OP appears to have placed an importance on low-end torque.
Since the Sprintex does not have a front-mounted intercooler like the Vortech or HKS, it should, in theory, be an easier install.

Haha, I make 200lb-ft to the wheels. Once I throw headers on it'll bump up a little more and have an angrier bottom end.

Have you driven any forced induction Brz/frs? Unless you're shooting for 500whp it's all the same. This guy asked about superchargers and I gave my input. The vortech is the perfect addition to this car. I retain my NA gas mileage if I behave, I can run the car hard and still touch the supercharger barehanded. It's a super easy install, super easy to maintain. Centrifugal s/c boost is very gentle on the motor.

Screw type is all bottom end and some mid-range.

Turbo is all midrange on small turbo and top end on a big turbo.

Centrifugal s/c is all mid and top end.

It's all about your personal goals and your budget.

Looks like the headers reduce that big torque dip on the low end which will give a smoother pull all the way through.

Innovate twin screw: It literally is two pieces and two bags of hoses and fittings. Skill level and comfortability will determine the time but it really couldn't get easier than bolting on a positive displacement supercharger lol.

I think Robi's shop has gotten the install time down to 3-4 hrs max

I would bet I could do my next vortech in 6 hours or less. Mine would've been sub 8 if I wasn't fucking around with my kids and face booking.

The ONLY way to get rid of it is with headers. I don't know any of the tuners that can get rid of it any other way.

If I was gonna recommend a budget set of mods at any level it would include headers, a tune, and sticky tires

^thats a really good point. im now considered the headers. im trying to decide what is the best headers for what i want, looks like im planning to go with a catted model since i live in CA

@ramiram1984 just got his rev works uel. Super sweet item.

It is true the headers with a tune eliminate the dip quite well. But you do need the tune.

The innovate kit with a tune gets rid of the dip too. I have stock header and cats. Can't show the dyno plot yet but you can get an idea from the 2 auzzie dynos released so far.

I would bet a decently skilled person could install the non intercooled innovate kit in 2 hours or less. The intercooled one might take a bit more time because of routing any plumbing for the liquid/air IC.