Topgunz - air to air upgrade

milkcow500

9psi pulley. Sebastian is telling me something is wrong with my fuel return and that my pump is fine.

I'm going to have to have my shop take a look at it next weekend or so. I'm probably just going to upgrade to the new CJM S1 kit with a Walbro 450 and call it a day.

JWillis72

What pump is in it now ? I have the S1 with the 255 and it doesn't do that.


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milkcow500

I have the S1 with the 340 Aero. Runs perfectly fine until I hit 6500+ rpms.

Pauly Z

I have the S1 and 340 Aeromotive. My problem is too much fuel right now. I think your problem is your regulator or pump assembly wasn't modified correctly.

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Custom Air to Air Stillen SC Setup, CJM S-1S FRS, ID1000 Injectors, Aeromotive 340 Stealth Pump, Test Pipes, Topspeed Exhaust, Z1 Oil Pan Spacer, Swift Springs, Adjustable Rear Camber Arms, 20 and 25mm Spacers, Custom Gauges, and Ecutek

Pauly Z

Update: Seb said my fuel pressure regulator is set too high which would contribute to running so rich. He also said that my engine loads are too low which leads him to believe there is a boost leak and probably after the MAFs. My question is...If there was a leak in the manifold there would be a vacuum leak wouldn't there? I'm reading 7 psi on the 8 psi pulley.

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Custom Air to Air Stillen SC Setup, CJM S-1S FRS, ID1000 Injectors, Aeromotive 340 Stealth Pump, Test Pipes, Topspeed Exhaust, Z1 Oil Pan Spacer, Swift Springs, Adjustable Rear Camber Arms, 20 and 25mm Spacers, Custom Gauges, and Ecutek

JWillis72

Yes it would, I had a hose coming off the back of the manifold crack at the T and the car started acting strange. The rpm was all over the place at a stop light.


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Pauly Z

That's what I thought. So there is no way that I have a leak after the mafs cause the car idles fine.

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Custom Air to Air Stillen SC Setup, CJM S-1S FRS, ID1000 Injectors, Aeromotive 340 Stealth Pump, Test Pipes, Topspeed Exhaust, Z1 Oil Pan Spacer, Swift Springs, Adjustable Rear Camber Arms, 20 and 25mm Spacers, Custom Gauges, and Ecutek

JWillis72

Sounds like you are out running the fuel system but you shouldn't be.


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StillenZ84

I have the S1-S and Aero Stealth 340 and mine doesn't cut out. I agree with PaulyZ that it has to be something else that maybe wasn't installed properly. No reason that setup should be struggling.

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AtA SC|9 lb pulley|2.85" SC|3.47" Jack|E85|CJM S1-SE|ID1000s|Walboro 485|Zeitronix FF|Stillen CBE|AP Racing|Level 10|F.I. Flex plate|Nismo-S tune|EcuTek RaceRom|Sebz|Speed density|Haltech|3GsCustoms Dual pod a-pillar|Carbon Signal GTR gauges|Fujimura|Built| CP Pistons/Carrillo rods|PortPolishHeads/intakes|928motorsports IG: evanosteenz34

TBatt

I am seriously considering going to the 9lb pulley now before I get the car tuned with the A2A setup. I looked on the Stillen website and could not find it. Where did you guys get yours and what is the diameter? Can I get this straight from Vortec or does the pulley go on the jackshaft drive that Stillen supplies?

Thanks in advance!

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RJM pedal, Hotchkis Sway Bars, FI TDX, FOG Light, Z1 Slotted Drilled rotors, Stillen SC, Quaife ATB, Z1 Oil cooler, AEM Gauge Set, Galeforce gauge mount, Avant Garde M590 Hypersilver w/RE-11, TopgunZ A2A kit., ECUtek tuned by Seb: ROLL TIDE!

TopgunZ

Hey TBatt. You can also consider changing the vortech pullies on the supercharger side instead. The majority of the slip occurs on the serpentine side. I proved this out on the dyno with some belt grip dressing. The 8psi pulley is not only bigger but it is blasted so it grips better and has better belt wrap. Also, a vortech pulley is $90 where the 9psi stillen pulley sells for $200.

Just food for thought.

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ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

Pauly Z

So how do we prevent serpentine belt slip? It does seem that my tensioner is a little weak.

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Custom Air to Air Stillen SC Setup, CJM S-1S FRS, ID1000 Injectors, Aeromotive 340 Stealth Pump, Test Pipes, Topspeed Exhaust, Z1 Oil Pan Spacer, Swift Springs, Adjustable Rear Camber Arms, 20 and 25mm Spacers, Custom Gauges, and Ecutek

TopgunZ

If you really want to do this I have a way. I was going to get into this but ran out of fuel so put it on hold because my life is chaotic right now..lol..

Buy a steel 2" pulley and put it inbetween the stillen pulley and the idler pulley on the face of the plate. THere is already a machined and tapped hole in there for it. You would then need to find about a 6" longer belt. This would get more than twice the wrap around the stillen pulley and grip like a mofo.

Do it!

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ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM

Pauly Z

Definitely look in to this. Thanks!

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__________________
Custom Air to Air Stillen SC Setup, CJM S-1S FRS, ID1000 Injectors, Aeromotive 340 Stealth Pump, Test Pipes, Topspeed Exhaust, Z1 Oil Pan Spacer, Swift Springs, Adjustable Rear Camber Arms, 20 and 25mm Spacers, Custom Gauges, and Ecutek

Pauly Z

Looks like Stillen originally designed the supercharger bracket for a idler pulley to be there. That's why there is a tapped hole on the bracket. Found this on a forum in the UK. And the picture is of Stillen's car.



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Custom Air to Air Stillen SC Setup, CJM S-1S FRS, ID1000 Injectors, Aeromotive 340 Stealth Pump, Test Pipes, Topspeed Exhaust, Z1 Oil Pan Spacer, Swift Springs, Adjustable Rear Camber Arms, 20 and 25mm Spacers, Custom Gauges, and Ecutek