Here is what happens when you remove the airpump
At higher RPM's with the increased drag on the water pump the belt has the potential to slip, reducing the coolant flow. A common sign is glazing on the back of the belt.
Dan
I can't find the interest for the Group Buy thread anywhere but I will be in the market for a Single Turbo model.
Even with the Greddy underdrive (bigger) pulleys, there is very little belt contact. With reduced belt contact, it tends to slip. If it slips, the belt can fail, your water-pump isn't efficient and you tend to over-tighten to compensate. If you overtighten it can cause added wear on the front stationary bearing.
Underdriving pulleys won't measurable add any power to your wheels and for a street driven car it's unnecessary anyway and can cause other issues under electrical load.
IMO a better alternative if your removing the AP on a streeted car is to leave the stock pulleys and get a airpump idler pulley such as Dan Chadwicks.....or others.
Underdriving pulleys won't measurable add any power to your wheels and for a street driven car it's unnecessary anyway and can cause other issues under electrical load.
IMO a better alternative if your removing the AP on a streeted car is to leave the stock pulleys and get a airpump idler pulley such as Dan Chadwicks.....or others.
I removed my airpump when I installed the Pettit TKT Cold Air inlet. Pettit provided new pulleys that work great and do not need to overtighten the belts. Recommend anyone doing this removal use this system, it works great.
I purchased a air pump pulley from UR a long time ago and I think they discontinued it now as well. Nicely made piece that mounts to the bracket where the air pump sat and the kit uses the stock diameter belt. This kit looks like a nice alternative as well.
is it possible to get fuel cut when you remove the air pump i have a DP with stock ecu for now and just removed the air pump and around 5,000 - 6,000 RPM a weird bad noise from the engine kicks on and i cant go anywhere, its really only in 1st and 2nd gear that ive tried it, opinions please!!!!
is it possible to get fuel cut when you remove the air pump i have a DP with stock ecu for now and just removed the air pump and around 5,000 - 6,000 RPM a weird bad noise from the engine kicks on and i cant go anywhere, its really only in 1st and 2nd gear that ive tried it, opinions please!!!!
What does the noise sound like? Is it "metallic, or thumping, or what?
IMO, something related to what you did is loose or vibrating, and that is causing the noise. Is it possible the new shorter belt is flapping/vibrating and hitting something?
Joined: Nov 2001
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From: Metairie, LA near new orleans






