adding fuel

[muskegoil]

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

[whatever_weirdo]

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

[muskegoil]

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

[ZMagnum]

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.

[whatever_weirdo]

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

[Illss1]

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

[gsjoe]

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

[ZMagnum]

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.