Diablosport Forums

I have a 2007 charger r/t.My mods are blasting bobs jba shorty headers and jba highflow cats mids.Should i add fuel and how much.I still have the suitcase and running 91 can tune and stock airbox with dropin k&n filter,,,,thanks

if i were you if your running 9r08 revision i would add +5 wot all thru every rpm setting if im wrong mikel will give ya advice thats the advice he gave me and its nuts now
by the way i hope you dont like your stock tires lol

yeah i'm running 9r08.I'll try +5 thanks.Those are good numbers,how much did you gain with custom tune.I'm running factory 20 but i'm hopping to smoke um lol

Don't just add fuel for the heck of it. Especially if you don't have a CAI. Get an oil catch can if you don't already have one. Use the Diablosport recommended gas. Then Log your LT and ST Knock Retard at WOT. If it goes over 3 or 4 consistantly then try adding 3% fuel accross the RPM ranges. Then log KR again to see if it goes down.

ZMagnum wrote:Don't just add fuel for the heck of it. Especially if you don't have a CAI. Get an oil catch can if you don't already have one. Use the Diablosport recommended gas. Then Log your LT and ST Knock Retard at WOT. If it goes over 3 or 4 consistantly then try adding 3% fuel accross the RPM ranges. Then log KR again to see if it goes down.

thats very true zmagnum has good advice mine was done on the dyno

I get 6kr at 5% across the board and feels slower when i add fuel but pings if i dont add. Sorry for threadjack

so what if you, at the track test &tune, add a little too much fuel in the mid or high range to see trap speed differences. 5% was improvement & KR went down to 2% 10% didnt change much. is this an ok method of testing?
!2% seemed fine too it pulled hard

At the track get some 100 octane unleaded gas. Add a little at a time (depending on how much you already have in the tank). The goal is to get your 91 octane to really be 91 or 93 to really be 93.

Get a catch can. That helps lower KR.

On the street try a few different brands of gas (ARCO, Sunoco, Mobil, and BP are recommended) and log your KR. Continue to use the brand that gives you the lowest KR.