Not mine, but thought this might be helpful to someone.

http://www.jeepfan.com/tech/OKDynoTest.php

 

That was very interesting. Thanks for the link.

 

I would like to see what it did for the mileage. They are just going off of the display which is inaccurate at best.

 

Thanks for providing a link to that article. I was considering the purchase of the Unichip, but now I have second thoughts.

Do you know of an article regarding simialr tests on the Jet Chip (Stage I and/or II)?

Guess it will be worth waiting until Hypertech comes out with their reported programmer and see if there are significant gains with that device.

 

I am with you 100%

 

Inaccurate, sure, but probably at least consistent from before to after mods.

 

maby this will put to bed the notion that getting cool crap out of the box is going to do anything other than make it sound better anyone ever wonder why race car teams pay so much for engineering ...tuning a vehical be it moms mini van or an indy race car is the same and dont forget race cars are tuned for every track they goto (all the things that go into it barametric pressure air temp humidity sea level shock and spring tuning caster and camber tires concrete or asphalt day or night put tape on here take tape off here and all that is for a few more tenths of a second) be real people YOU have to know what your doing and there are soooo many factors that no one here (i think) could make a daily driver wow with a few hundred $$ worth of out of the box crap
now all those people who know better bash me please

 

LOL - No bashing from here...

I do think that if a factory design had a compromise that for example gave up some power to have the sound be better....you could make the sound worse and let the air in more directly w/o resonators, etc.

IF the airflow was a limiting factor, THEN improving the flow can get you some gains.



If that was NOT a limiting factor, then it will NOT get you any gains.

Same with exhausts...Some people up the diameter of the exhaust pipes w/o any measurements of back pressure, etc...forget all about exahust scavaging pulses, etc...and get worse mpg/performance with their spiffy new giant exhaust plumbing, etc.

We used to set up race cars, as a rental business out of my Dad in Law's garage....so we'd tune the handling/suspension, gearing, etc, for the track it was going to run on.

And yeah - there's very little in the way of a boxed mod that that works under all conditions...typically, at best, it can maximize ONE aspect, and sacrifice something that you don't need as badly to get it, etc.

The claims made by the aftermarket performance comapnies are in a competitive death spiral out of contol...rediculous claims, for throttle body spacers adding performance to multiport fuel injected engines, etc...its just crazy the crap they'll say to get you to buy their's instead of the other liar's stuff.



If one of them actually made a TRUE claim, like "An extra 1% HP at X rpm....while all his competitors were claiming 30%....who's going to buy HIS 1% POS, when there's 30% to be had from the other guy?

So they run the dyno until it bleeds, take the runs with the biggest differences, adjust the charts to a scale shift that emphasizes the differences, and advetise "Real" improvements that in a scientific study, might be called "noise" rather than a true difference, etc.

So, sure, you can buy some boxed improvements, but, be realiatic as to the true gains you might expect.

 

true that