VPC and horsepower

632 Views 4 Replies 0 Participants Last post by ianong, Dec 29, 2001

Discussion Starter · Dec 27, 2001

Can any BPU guys tell me changes in horsepower (or changes in 1/4 trap speed) after adding a VPC alone. It is hard to believe, but I've heard of some people being no faster (and sometimes slower!) in the 1/4 mile after the VPC (I'm just trying to give myself another reason to wait for the AEM unit, and avoid the VPC)

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Discussion Starter · #2 · Dec 27, 2001

it's all about the tuning, properly tuned, there is no reason a bpu+vpc should not beat a plain bpu.

regardless of the fuel controller, aem, fields, afc, vpc/gcc, you're still gonna have to tune it and that'll make the most difference.

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Discussion Starter · #3 · Dec 28, 2001

I gained 22 rwhp with just adding the VPC, NO TUNING. Others have experienced similiar results.

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Discussion Starter · #4 · Dec 28, 2001

Walser said:
I gained 22 rwhp with just adding the VPC, NO TUNING. Others have experienced similiar results.

Thanks Walser

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Discussion Starter · #5 · Dec 29, 2001

would those supras using map rather than the maf sensor attain similar hp gains?

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