What did GM do to the quad 4 to chop down the HP?

Ronbo

New member
I know that in '93, the quad 4 was rated at 180 hp. In '94 it was rated at 175 hp and in 95, it was down to 170 hp.

I'm curious to know what they did to bring down the hp.

Was it a simple exhaust re-tuning? Chip programming? Different cam?

I'm asking because I have a chance to buy a '95 Beretta with a quad 4 and am thinking if it's something bolt on, I may just go ahead and get it then re-gain the lost hp.

Yeah, I know many believe the Beretta is crap, but I have decided to buy one anyways, either this one or another.
 
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