What HP increase can I expect from these mods? [Archive]

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Anonymous

12-14-2003, 12:41 PM

I just bought a 91 red zr1 with 9000 miles and it is completely stock. I want to add a flowmaster exhaust, change the prom chip to a DRM and install a forced ram air box where the front license plate goes. What realistic increase in HP and TQ can I expect from this??

Anonymous

12-14-2003, 12:42 PM

Give or take around 25hp increase. TQ I can't really say, maybe around 10.

Anonymous

12-14-2003, 08:11 PM

Rich,

I know this wasn't on your list but headers gave me 20rwhp and 15 tq. A nice mod to consider :) I havn't heard too much about the force air in terms of h p numbers.