I have a 2000 supercharged s-281. It is basically stock besides a 12lb. pulley. Heres the problem. When ever i give it boost in high rpm's it looses power and stops pulling around 4000. Then whenever i shift into another gear it hesitates a couple of times before it takes off. Does anyone know what this could be? Do you y=think i should put the stock pulley back on just to be safe or what?
Posts: 1077
Joined: 9/16/2003 From: United States Status: offline
If it only happened after you put the pulley on then yeah, but i dotn know why that would make all this stuff happen. sorry man im still in the N/A department
...Make sure the car is tuned right. I had similar problems with an o1, until i put a MAF tuner on it (pro M). That allowed me to get an exact dynotune on the air-fuel ratio, which in turn improved the smoothness during acceleration. (and i picked up 40 rwhp)
it is more than likey ur belt is sliping that is while the boost falls at a certain RPM try it in multible gears and see if the problem persist. mostly like it is belt slippage u may need a new one simple fix
Posts: 155
Joined: 4/8/2003 From: United States Status: offline
On a 2000 stage 3 saleen, the problems you described were similar in that it the engine would hesitate in higher rpms and surge when shifting gears. When read with an OBD2 scanner it was discovered that two cylinders were misfiring. After changing the plugs in those cylinders that problem no longer arose.
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Problems with my 2000 s-281sc - 
