Power peak curves with bolt on's?

[orlando]

[orlando]

<{POST_SNAPBACK}>

Any graf out there that shows the changes in peak HP and TQ curves over stock curve with minor bolt on's. Does it hit higher or lower then stock in RPM'S range?

[misterp]

Torque peak RPM is dictated mainly by crank stroke + intake + head + cam + exhaust design. In 'minor bolt-ons' the only thing that you consider changing are manifolds, and the LQ9 intake is already a pretty good performer so your question then becomes "if I change exhaust will that change my torque peak RPM" - and the answer is a definite yes. Headers are tuned to work in specific RPM ranges. In my SS I have the stock manifolds with Corsa cat-back, and while I have no dyno sheet to prove it I can say for certain that the torque peak went upwards 200-300 RPM.

 

Mr. P.

[orlando]

Torque peak RPM is dictated mainly by crank stroke + intake + head + cam + exhaust design.  In 'minor bolt-ons' the only thing that you consider changing are manifolds, and the LQ9 intake is already a pretty good performer so your question then becomes "if I change exhaust will that change my torque peak RPM" - and the answer is a definite yes.  Headers are tuned to work in specific RPM ranges.  In my SS I have the stock manifolds with Corsa cat-back, and while I have no dyno sheet to prove it I can say for certain that the torque peak went upwards 200-300 RPM.

 

Mr. P.

<{POST_SNAPBACK}>

When I say basic bolt on's I mean cold air intake,cat back,tune. I whould like to see the dynos side by side I have the stock dyno. I whould think the peak whould hit faster do to the better breathing and tune? It's fight night,UFC on pay per view tonight at 10:00. It's going to be good.

[haulin79]

It totally depends on the bolt-ons that you bolt on. Some bolt-ons are designed to improve your low to mid range rpms and others are designed to improve the high rpms.