loweredfourpointsix

the first time i Dyno'd my car bone stock i put down 226rwp. 2 weeks later i put on a K&N FIPK and i put down 238rwhp and my A/F was lean @ (i think) 14:1. then my class was over so no more dyno time. after the class was over i threw a UPR Catted Xpipe, C&L Plenum, a 70mm PP TB, and i got my hands on a predator tuner. so i did a base run and my A/F was WAAYY lean on the bottom end @ around 17:1 and was at about 15:1 on the top end. i called my friend from a respectable shop and he told me to max out the pedator on the fuel. but the best my A/F got was 15:1 on the bottom and right before i let off it got to 13:1 and i only put down 239.8rwhp.. i dont see how i gained 1.8rwhp with a midpipe, plenum and TB.



The different graphs indicate where i played with the Fuel on the Predator. Last run was the yellow one with the fuel maxed out.

2011Black5.0

"i dont see how i gained 1.8rwhp with a midpipe, plenum and TB."

how you worded that cracks me up lol

lilcrate

I have been waiting for this, it has been a while since you said it was going down. Not sure how the 238 happened, but current numbers arent horrible for you mods.

loweredfourpointsix

yea i thought my car was a beast cuz i put down those numbers with the intake.. the teacher even uses me as an example for nice hp gains lol.. im sure if i richened up the A/F ratio i would make more numbers.. should i get rid of the predator? cuz im wayyy too lean and the predator is maxxed out

1999 GT

so it made more power running lean? but thats wierd with the 1.8rwhp gain...

loweredfourpointsix

why would my car be so lean? and sorry for the delayed response the teacher took forever to email me the dyno graph

loweredfourpointsix

no im figuring i lost power cuz i have 3 upgrades which should equal to more then a 1.8hp gain.

PaintballFreak

What were you using to monitor the AFR? To me that seems way past dangerous to be running wide open throttle and if that was the true AFR, something would have broken.

1999 GT

right...according to the graph it looks like you made better mid range running lean...but you should definately make better numbers than that considering the mods you have

lilcrate

I use the predator it and is not maxxed out, had it with full bolt ons and now with charger, not sure why so lean though, someone else will probably be able to help.