Originally Posted by bythabay

First I'd like to highlight that this is not an advertisement! I have been struggling to hell with my g37 stillen supercharged to get it to drive "normally" and finally I happy with it after spending way too much money on other tunes. Here's finally what happened:

I've been battling fuel control issues with my supercharged G ever since I've had it, however, I didn't realize my issues until I met Anthony from FFTEC and he was completely open book with me about everything.
I've had numerous tunes from reputable tuners (multiple west coast and east coast tuners) from all over the country. Finally, it took the hard work and dedication of Anthony at FFTEC.com to put my car into complete fuel control using a combination of ECUTEK and the utilization of ALL of it's powerful custom features in creative ways I can't even begin to describe.
Many tuners use the speed density feature to tune this kit, however, after close observation it becomes obvious that vehicles tuned with conventional tunes will have wide swings in injector pulse widths to compensate for trims that are constantly swinging to far one way or the other. This results in surges of power, and overall lack of smooth driveability.
Working with FFTEC has been a painless pleasure. They have a base tune now calibrated for outstanding driveability that could be custom tailored to any Stillen supercharged 3.7VHR application. I am absolutely astonished at what they were able to accomplish after I had paid for 3x other tunes some of the most prestigious outlets. Not only is my car getting excellent fuel economy, but it's making great power and I don't have to worry about my cats clogging anymore from poor fuel control (since my vehicle is a california vehicle).
email sales@FFTEC.com and ask for Anthony if you want the most of out of your Stillen supercharger kit!

Originally Posted by milkcow500

What type of drivability issues were you dealing with? Did you ever think to just relocate the MAFs? It probably would have saved you a lot of headache.

I've been tuned via MAFs, SD, and hybrid. I've found that the hybrid tune was the smoothest, since you get the best of both worlds. Then again, my MAFs are also relocated, so that wouldn't have worked for you.

Originally Posted by bythabay

I was dealing with weird powerband issues down low where the car would fall flat on its face. There were surges in power - it didn't drive like a stock vehicle. I had the other tuners tell me this was "normal" for a modified vehicle. But Anthony has proven to me that the car can be made to drive normal even with the supercharger and its impact on air metering.

I tried all of the above - kept having issues. Never tried MAF relocation, but then we're looking at a blow-through config, and that wouldn't be smog legal in CA.

Originally Posted by RickyBobby

bythabay thanks for the details. we had a local tuner out here in Colorado who tuned FI and nitrous on the VQ's but he was software heavy and got a job with uprev in Texas. Will run this all by him asking if that is one thing he has been working on.

milkcow what maf relocation did you do, did you have to custom fab off the stillen kit or use something else for intake?

Originally Posted by milkcow500

[Snip] The Q50 guys have been relocating the MAFs to the stillen charge pipe though.

You slap a universal K&N filter on the volute of the supercharger and toss the y pipe. You get more boost from this modification as well.

Originally Posted by RadioFlyer

Do you have a link to a thread or some discussion on relocating the MAFs to the charge pipe?

Originally Posted by 4doorfury

The remedy to this pcv issue is a little complicated. Optimally you would have a bumg welded post supercharger for the pcv to connect to, you would install a vent to atmosphere catch can in line with a check valve on the vent and at the charge pipe. When out of boost it would seal the system and run as intended. When in boost it would open to atmosphere venting and seal the bumg on the charge pipe. You can tune around the fact of you always leaving it open to atmosphere but again, it isn't ideal

Originally Posted by Mad A

I want to put a K&N filter directly on to the volute of my Stillen supercharger. I've already re-located the MAFs post blower., right before the throttle bodies My question is what to do with the hoses going into the inlet boot that goes on the SC in stock format. One is from the by-pass valve, and that's easy not a problem, I can just let it vent to air. The other hose is from the crankcase I believe. What has everyone done with this? Crankcase breather filters? Where? Any help is appreciated