Project 2.Slow Mazda3

[D_Eclipse9916]

Tuner says notate power fall off after 6800 because of head flow....says 8000rpm will give you a couple ponies...huh? Those are contradictory statements.

No you can't just raise limiter and increase power. We were talking about a cam upgrade I mentioned with the increase in redline to 8500 as well which will help the head flow better.

Yes there is a lot of stuff to pay attention to when upgrading to a cam. He says doing the supercharger is the better idea (obviously) but you know boost points and stuff take a toll on points.

And do you really "need" hp? Doing a dyno reclass actually doesn't help a lot of the times. Before you go down this path, contact Greg Greenbaum and ask at your weight how much "max" hp you can make to stay at a certain point level. Back in 2010 when I requested mine, it was actually lower than what I could get with points so I didn't go that path. It is dependent on the car and Greenbaums mood that day.

The lowest weight to power I can do in TTE is 16.50

The max power I can do to be higher than 16.50 weight to power at 2800 pounds is 169.69whp.

My weight to power with ~150whp (I really need to get on an actual dyno. I'm putting down !180hp to the crank on VDyno) and 2800pounds is 18.66.

Miniminum weight to power is NOT what you will get in a dyno reclass. It is the lowest limit of the class. He would give that to an SUV that cant handle. You will more likely get between 17-18.

Also with boost it will require a dyno reclass (not points), and will most likely pop you higher. I know this rule set is kind of confusing.

If the head won't flow any more than 6800, a cam will not fix that. Going from 6800-8000rpm is a large difference and your intake manifold/head ports/valve size just are not made for it. At most you willl probably extend your powerband another 4-500rpm with a cam change. NOT 1000-1200rpm. A cam change to get a bit more power under your current curve would probably help though, but it sure isnt cheap.