Diablosport Forums

I Seem to have lost power since i put the diablo sport predator tuner in my 2006 chysler SRT 8 300. I put it on 93 oct. with CAI. And it seems like i have lost power. i had several races agains my fathers 2010 dodge challenger SRT8. before the tuner. and i could stick right with him. untill 100mph. and then i would start to pull away on him. after installing the tuner. we raced several times agian. i could stick with him untill about 100mph. then he would leave my behind. BAD!............. ANYONE PLEASE HELP!!!

I am new to all of this if someone could please help.

As I mentioned, Iwould suggest you do some logging here to see if there is any KR happening with the tune.

Most do not use the 93 tune because we can not find good gas. I have better luck with the 91 CAI

what should i data log? I just finished doing some data logging.
on stock tune and on 91 oct. CAI.
i logged
knk st retard 0-3.5
knk max tot 20-12
knk sns v1 0-2.79
knk sns v2 0-3.67
knk tot ret 0- (-3.5)
knk lt ret 0 (didnt move.)
During the logging, it was a quarter mile run.
0-60 time 5.70s
1/4 mile time 14.12 sec
@ 106.0 mph.

those numbers are from the 91 oct. tune with cai.
i tryed all tunes

93 oct. CAI.
0-60mph= 5.7sec
1/4 mile=14.35 sec
1/4 speed= 101.2 mph

91 oct. CAI
0-60mph= 5.63
1/4 mile= 14.06
1/4 speed= 106.8mph

STOCK
0-60mph= 6.42sec
1/4 mile= 14.75sec
1/4 speed= 103.7mph

Its knocking, that needs to be tuned out.

Also, those times are ridiculously slow, like slower then a 5.7. Stock 0-60 is about 4.9 and the 1/4 is 13.2@108, so you aren't doing something right. Could be those stupidly heavy 22's. Rotating mass is a killer.

Mike_Levy wrote:Its knocking, that needs to be tuned out.

Also, those times are ridiculously slow, like slower then a 5.7. Stock 0-60 is about 4.9 and the 1/4 is 13.2@108, so you aren't doing something right. Could be those stupidly heavy 22's. Rotating mass is a killer.

I also wondered why his stockish 300C can pull a NEW SRT8 Chally...?

Something does not really add up...

I have a 300c and the best run at sea level is 13.80 no where near 13.2.

He has an SRT8, you don't.

please read the next post

Your wright I dont have an srt 8 But you said that a 300c 5.7 could run a 13.2 or did you mean the SRT8 could run a 13.2

The SRT8 runs 13.2. The 5.7 runs low 14's stock.

I agree with that just misunderstood what you said before.

Loss of power.
I went to the track last night Mo-Kan Dragway Mo. running 104 oct sunnco and 93oct canned tune, 09 RT 5.7 chally auto, 4000 stall CAI, Catch can, super 44s, Nitto drag radials. Motor basically stock, Ran 13.80 removed 93 tune tune installed factory tune ran 13.30 at 109mph,,major traction problems, need wider drag tires. Made adjustments to factory tune got some traction, only spun through first and into second this time and ran 12.70 you tell me.