12FX2

This first graph is just 5 star 93 p/t. Everything else is stock on the truck.



This second graph is with the Solo downpipe. Same tune and everything else stock.

jcain

24hp/33tq at the wheels. so do tell us what the weather conditions were like for each different day.

TwinTurboFx4

Am I reading this right? Did you
Lose hp and torque with a downpipe?

jcain

no, i think he is naming the runs wrong.

TwinTurboFx4

Maybe. We need him to speak up! I hope the way he has it is correct

engineermike

My guess is that the 350 rwhp run (dyno 1) was cooled off with the 93 tune. Then, they backed it up with a hot run (dyno 2) and it dropped to 327 or so. Then, they installed the downpipe and it picked back up to 339 (dyno 4).

Just a guess, though.

Subscribing.

ryanp77

yeah defiantly confused on this one

12FX2

This is correct.

The first run was early morning, temps around 70. The truck was cooled off when it went on the dyno. The second run was right after the first. Theres was maybe a minute between runs. I would like to have got a third run in, but when the dyno time is free, you can't ask for too much.

I didn't get the printout for the third run, but it was more like the first. The difference between the third and fourth runs were like the first two. The only difference was, the temp and humidity were a little higher. The reason I used the second and fourth runs to compare the downpipe, is because I thought that would be closer to real world.

I'm sure if I had Mike put it on the dyno, he would find more power. Also, remember this is a tow tune.

prime8

which y pipe did you install?

12FX2

Solo's catted pipe.