Stillen SC help!

Nut_N_Much

Hey,
Kelly and I had this same problem with his car. When the tuner puts the fan in front of the radiator it started to change each run. Unable to get a base line. Mainly effected low RPMs before the boost kicks in.

What we did was take a small sheet of aluminum and bend a shield to mount on the bumper. The shield blocked the air flow from the fan allowing consistent runs. Runs like a Bat out of hell now!! Was effecting his tune on the street before the fix.

ISSUE: Air flow sensors are to close to the filters on the stillen intake. During our runs we used a piece of card board to block that air flow at low RPMs.

TEST: Try a run with the fan off just to get a reading, then do it again. If there the same or close then its the fan blowing air into the air filters. Mainly effects computer before the boost kicks in at the lower RPMs, makes it hard to get a baseline before the tuner starts his runs. .

Hope this helps..

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wifedrivenZ

Thanks all I will let the tuners know. They ordered a new tentioner and if that don't fix it I will have them try a run without the fan on.

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Stillen Exhaust, Stillen Supercharger, Stillen Oil cooler, Stillen Headers, Test pipes, 928 Impeller, 9 lbs pulley running 12lbs of boost, Custom tune from National Speed. 415WHP 345TQ

Motion Lab

Did they use the same size belt? You generally will have to use a smaller belt as well. We had to do that on the 03-04 cobras and supercharged CTS-V' that we have done.

Thanks,
Alex Goodwin
AlexG@motionlabtuning.com

wifedrivenZ

Alex,
When I first bought the SC it came with a 9lb pulley then they had some problems and they sent out a 8lb pulley no new belt needed. So I thought that the original belt would be fine. National Speed said the belt may have stretched over the 9k miles I have put on the car since I have had it installed. NS called Stillen and they said oh well you should have ordered the belt with the pulley... I was not very happy with Stillen when I was told that. NS ordered a smaller belt and it still slips. So today we will find out what is going on with the car. Fingers crossed.

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Stillen Exhaust, Stillen Supercharger, Stillen Oil cooler, Stillen Headers, Test pipes, 928 Impeller, 9 lbs pulley running 12lbs of boost, Custom tune from National Speed. 415WHP 345TQ

Osiris

time to go cogged!

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wifedrivenZ

If this does not work that is my next step. Does anyone know how much it will cost?

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Stillen Exhaust, Stillen Supercharger, Stillen Oil cooler, Stillen Headers, Test pipes, 928 Impeller, 9 lbs pulley running 12lbs of boost, Custom tune from National Speed. 415WHP 345TQ

Osiris

Keep in mind, this isn't just a remove old and install these. These will require some customization like spacers, minor alignment of the blower and such. You will also need a re-tune.

These are the parts i have installed:

cog belt $21.95: (gates 560-8mgt20 OR vortech part #: 2a042-070)

Supercharger cog $132.95: 2A032-030 50mm

jackshaft pulley $94.95: 4GR032-034

idler pulley $38.95: 4gr116-300 3inch

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