More Air Flow/ Cooler Charge SRT8 08'

[orangehemi]

Question , I have re- done some intake plumbing , If u look below where the factory air filter box is located ( which ALL of us should by now have tossed that aside ) there is a roughly 3" OD hole there & below that runs right down to the factory brake air vent, I have nicley opened up that hole to allow a PERFECT made K&N filter to drop right down into & thru the hole , I have a 4" ID smooth urethane lined flex hose ( & no crap dryer hose ) that runs up to the aftermarket intake tube , which the 4" fits perfect , the tube just slides right into my 4" ID hose. What I wanted to know was could I throw a little timing & fuel into the 93 CAI tune , due to more CFM & a much cooler air charge ? I just wanted to see everyones thoughts ? & no this is not all butchered up , its very clean installation. & the filter fits as perfect as can be.

thanks !


I do have most stan. mods, 3" Exhaust W/ Cats, Catch Can, Jet 180, 93 CAI Tune, ALWAYS use NOS octane boost per fill up. & of course
custom hi-flow REAL COLD AIR intake.

[Mike_Levy]

No. The CAI tune will be fine. The motor isn't bringing in any more air, because it can't use it. Air temperature changes are already taken into account by the computer.

[orangehemi]

thanks Mike, but Im thinking the computer can ONLY allow for the parameters ( give or take) in stock form, & a tad beyond, I know that there is wayyy more CFM flowing than the sensor can adj & tell the computer to allow for , just as there is a reason when Diablo is asking u when u install ur tune CAI or not, I feel Im beyond the " standard " allowed adjustments that Diablo makes when u select CAI or not, we all know more air / more fuel/ correct burn = more power. I can say this the throttle response is very tight , crisp & responsive , I have the NAG1 so at 80 mph & punch it I do feel it pulls harder .

[Mike_Levy]

The maximum cfm the 6.1 can flow, at 6400rpm and 100% Volumetric efficiency is 685cfm. The stock motor is only about 85% efficient, so it only flows 582cfm at 6400rpms. Adding your intake will have little effect on it. Maybe 86% or another 7cfm. The canned tunes can easily adapt to that. Even if you had no intake on it, the efficiency wouldn't increase enough to matter.

CFM = CID x RPM x VE ÷ 3456
CFM = 370 x 6400 x 0.85 ÷ 3456
CFM = 582