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Originally Posted by Chris357
1. 50-70 peak hp? No, but I follow Pray Performance on facebook and he's been able to get tune-only cars into the 10s because there's huge amounts of torque gained by a tune in the middle parts of the RPM range. maybe 25hp peak at most?????? I'll let others that know more chime in here.
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Check this out, we did testing on TB's and saw that the stock tune closes the throttle body partially starting somewhere close to 3000 - 3500 rpm and gets down to 68% closed on even the stock TB to about 5000 rpm where it lets it go back to 100% open. I assume with a tune alone you could pick up 75 hp in that RPM range if you can stop the TB from partiality closing. I would not worry too much about peak gains at the top of the RPM range when you only spend a second or two. You want the power increase from 3000 - 3500 to 5000 where you spend a lot of time while driving.
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