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SweetWilliam 08-19-2012 08:31 PM

Dyno Time
I'm so tired of reading all the hype around this CAI, that exhaust or another better grounding kit giving me 50hp according to my but dyno. Does anyone know of any actual dyno sheets of before and after performance upgrades?

A good friend had a Dynojet dyno with AFR meter and we would strap a quad to that thing for an day of hell. One camshaft, exhaust or ignition after another would get installed, jetted in with a couple runs then pulls for numbers. Was very interesting to see the results.

I know its much more money to do it with a car but there must be some real world info posted someplace. The 5.7 is used in a lot of applications, must be some good info around. Anyone seen any such thing?

dmsfun 08-20-2012 04:18 PM

Re: Dyno Time
Problem is that Dyno before and after installing things costs a good amount of dough. If you dyno on different days, results will also vary, so you have to do it on the spot after making the change. I am getting mine dyno tuned in a few weeks form a Mopar specialist, but have no interest in just getting a dyno reading.
A CAI will lose low end and throttle response, plus you have to rev it to see any gains, if there are any. Same with a catback, lose low end and gain noise. I've had both, went back to stock and it drives much better.
The variable diameter CNC ported 85 mm TB gains power everywhere across the curve, from low to high rpm. as does the Apexi super voltage stabilizer. All I can say is those make it much more responsive and fun to drive, it takes off from the get go with a lot more torque, the engine is much quieter and smoother, and you don't need to downshift to accelerate at speed.

SweetWilliam 08-26-2012 07:44 PM

Re: Dyno Time
i know all about time and money on the dyno, thats why I asked if there is some info posted anywhere. Peak numbers are fun but its really a tuning tool.
Im sure there is 5.7 info posted on a dodge forum or something. If/when I find it I will pass it along.
Apexi super voltage stabilizer...thats something I would have to see real dyno results for. Have seen very little positive results on the net for any vehicle. Glad it worked for you, but I have zero complaints about how my Cherokee runs and wont be spending cash for one.

avsfan13%5 03-10-2013 02:57 PM

Re: Dyno Time
I have dynoed my jeep stock at 211 rwhp and 270 ft of torque, will be re dynoing my jeep here soon with cai, under drive pulley and tune let you know the gains I get

jeepgcoman 03-10-2013 09:50 PM

Re: Dyno Time
Go over to the and you'll find plenty of dyno charts for almost every imagineable 5.7 configuration.

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