Stillen supercharger long term reports

ANMVQ

Agree with Diego send them back to Z1 and use the extra funds torwards the SC kit. An Stillen will tell you themselves also to not use HFC's or headers with their SC.

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14 Q50 AWD, ARK, ECUTEK (SEB), Takda,

future370zzz

Don't quote me but I read that it's has to do with the forced induction causing blow by in engine from the lack of backpressure (free flow from test pipes/hfc).

I probably have it half correct. haha

Eventually your stocks cats will burn up and need to be replaced though.

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zmanelite

Anyone have idle that fluctuate at times ?

I've also noticed loss of coolant and I have to top off the radiator a few times

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Instagram @zmanscm

future370zzz

My idle fluctuates when I accelerate and then start slowing down. During idle it's pretty consistent.

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zmanelite

Mine is erratic and im waiting for a response from Stillen as to when i can bring it in so they can check it
Just seems that after they take the money customer service goes out the window

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chrisgordillo

I have Motordyne art pipes but stock headers. I'm running 415/310 on 93 and around another 20whp with 100LL. However I had 2 invida test pipes break and 2 cbe tanabe break at the welds. Also make sure you get a strong fuel hose that attaches to your fuel pump. I had to get a new engine because mine was severed I ran lean. Make sure you get an air/fuel gauge to monitor.

ANMVQ

No crap really!!! Same thing happened to mine, Fuel feed line was junk motor went BOOM

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14 Q50 AWD, ARK, ECUTEK (SEB), Takda,

chrisgordillo

I thought I was the only one! Wow! I almost had it happen twice. The second time I noticed when I went to dyno my car. It has a steel braided line that is super strong now.

Team_STILLEN

Have you switched to coolant yet? I know you said you were running water and water wetter and that might be causing the issue. Coolant raises the boiling point of water and if the pure water (and water wetter) is boiling you would be getting air bubbles in the system. This could affect the idle as the ISC is affected by coolant temps (air bubbles going through the ISC can cause erratic idle).

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STILLEN | Robin | Performance Specialist | rmoses@stillen.com| 800.576.2131 x133 |

V1H

On my search for a low yet accurate boost gauge suited to the Stillen SC kit, which didn't get far, I got the idea of actually making one instead.
Most Gauge go at least to 25 or 30 psi. What we want is no more than 10 psi. And the accuracies of mechanical and electronic gauge are beyond scrutiny. We can but hope that 8psi doesn't actually mean 7 or 9psi.

So I was thinking of getting a suitable BOSCH MAP sensor, they are highly accurate (OEM parts) and very fast response time and have a very linear output across their range. All we gotta do is display that output as eg. LED bar or digits. It just needs a little voltage conversion to express that output voltage in numbers representing psi. Electronics wise this is very simple. The display possibilities would be endless too.
Saw this inspiration for a BMW:

The challenge is finding a cost effective BOSCH sensor with calibration curve available. I looked at this cheap fella #0 261 230 191 (used in supercharged Mercedes and others) with a pressure range of 0.15-2.6 bar (up to 23psi boost) but no datasheet.
Whereas the #0 281 002 119 (up to 22psi) has a datasheet saying response time is smaller that 10ms and accuracy is ±1.5 kPa, that is ±0.2psi guaranteed accuracy! But this particular part is pricey.
I keep searching, maybe I get lucky

zmanelite

Switch to coolant days back and its gotten worse
I drove to the track and before I left pit lane the car thru a service engine light
I put on a scanner and it said lean bank 1and 2
We cleared the code and I tried going for session 2 and 2 laps in the light came on again and car started to backfire and no power
We cleared the code again and I just drove it home
Cars idle is erratic still and while driving now sometimes surges ,what sucks is i told you guys about it and I feel like I wasted time and money today for nothing
I'm seriously thinking of putting the car back to stock
You guys kept all my old stuff injectors, pump ,etc.. So it shouldn't be a problem

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chrisgordillo

Check the fuel line that attaches to the fuel pump. Also because the fuel pump is bigger than the stock fuel pump the filter on the end of it was not staying on. This made the fuel pump float in the fuel pump assembly. With this happening my car would always have fuel starvation issues on turns. I've tracked my car 3 times. So what we did is tie strap the fuel pump to the fuel pump assembly. Now I have no fuel starvation issues. I also have the heat exchanger that comes with the kit and it works fine. I'm sure if I upgraded to a bigger one it would be better but my car is running perfect now. Trust me I know your frustration. I had so much trouble with thus kit but finally for about a year now it's been running good. I got it installed in 2012.

zmanelite

can you elaborate on this?

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chrisgordillo

Check your fuel pump assembly to see if the fuel pump is floating or secured like it's supposed to be. Also look to see if the fuel line is cut. Not much more I can elaborate than that.

JETDRVR

The Stillen SC kit seems like an addition I'd love to install on my Z. For those of you that have this Stillen SC kit, what would you advise I'd do to my "stock" engine along with this upgrade.

Thanks!