[scdtrd]

Hey Yall!

I wanted to chime in and try to help shed some info I learned this evening.
I had a long conversation with Jack this afternoon and there seems to be a loss of focus on what the gains are. Now, before I say any more, there are TWO camps of Unichip offerings that I am aware of. The N/A and S/C. What I am referring to is the N/A portion. Earlier, Kevin reported there was a lower %gain for people that had FIPK, Headers and Exhaust mods on a N/A 4.7L V8 vs. a BONE STOCK 4.7L V8. I called and spoke to Jack specifically about this. I now understand completely what the situation is. I will try to put all this down... so here goes.


When Jack dyno'd a BONE STOCK 4.7L V8 2UV-FE engine, he found that Toyota basically made the lower RPM range rich and the upper RPM range lean. Now, the mid point between upper and lower is 2600 RPM, if they redline @ 5200, so that is my basis for upper / lower and "mid" being the 2400-2800 range. When Toyota did this, they knew the "average" for the 4.7L for the "average" driver is in the 2200-2800 range. Now, You take that same 4.7L V8 and put a FIPK or cold air intake on it, and you just made MORE power in the lower to mid range due to the fact that you are putting MORE air in and reaching a BETTER A/F ratio. The closer you get to 14.7:1 SLIGHTLY on the riche side.. the MORE power you make ... more efficently! Ok.. so lets look at the UPPER range. Now you have MORE air coming in, and your already lean in the upper area.. with MORE air your even MORE lean. Not good. Take that concept, and add headers to the mix as well.. you see where I am going with this. your making more power in the lower range, and not much of starving the 4.7L in the upper range. So, your overall power curve will be skewed to the lower range, with the STOCK ECU in control. Ok... in comes the Unichip.
With the Unichip properly tuned, Jack can correct any A/F ratios in the lower, mid and upper range. Now, you add the correct TIMING, and you will make MORE power thru the ENTIRE RPM range. The center portion will be the least %gain and the lower and upper will be the highest %gain. So, insted of a sharp bell curve... he has "flattened" the curve, but at the same time, RAISED the overall curve above what it was WITH the FIPK and Headers and exhaust alone. Now, with the FIPK, headers and exhaust added to the mix, the %gain will not be as much as with a BONE STOCK unit.. but that makes sence. The Unichip has just corrected the flaws and is delvering SMOOTH, A/F corrected power thru the WHOLE RPM band. And because it is making more power, more efficiently, it SHOULD get better gas mileage. The post by Todd basically puts this to the test. Jack said that he does not care what we decide, he justs wants to provide us with the BEST solution to making the most power. The Unichip will compensate and correct multiple issues all at the same time. In summation, Weather your bone stock or have all mods listed above, the Unichip WILL provide gains above the mods alone. I hope this has shed some light on the %gains and what they mean. I admit, I was slightly confused at first. As far as the S/C folks... that is a WHOLE 'nuther discussion. I will elaborate on that soon. I need to speak to Jack, and make sure that I have all my ducks in a row, as I am in that camp and want to be dead on.

I am all for going ahead as planned. I hope you are as well!

SCDTRD