Contour Enthusiasts Group Archives Forums Modifications Forced Induction Building a Custom Water - Air Intercooler

Originally posted by turbodude:

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what kind of table does teh stock PCM uses, i highly doubt it is a configurable 32 x 32... And speed density IMHO is much better than the MAF setup. But to each his own.

Timing is my biggest concern. But you should be fine with your setup. As long as your injectors are not too big.

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Sorry, I have to disagree with your assumptions.
The MAF setup is far superior to the speed density. I can attest to that since I used to work on many GM's with speed density. The MAF system can easily accommodate any increases in boost pressure without having to change the sensor as long as the airflow is within the range of the MAF and the fuel requirements are within what the injectors can provide.
Basically, my injection system on my car is fine right now with no boost, 7 psi, or any psi I choose. I tested the A/F curve with 3 different boost levels as well as NA, and the PCM automatically adjusts the fuel based upon volume of air. No matter what boost level I picked, the stock PCM kept the AF extremely close to the same on each run without any additional tuning once it was dialed in. I'm very pleased with it, just not with the cost of reburning the chip.
I am going to consider purchasing the ECM from the 2000 SVT and converting to returnless so that I can buy the tweecer and get full tuning capability. With that much power at my fingertips there wouldn't even be a contest, I would win hands down!

Just messing with you guys, but you know I would extract the most power out of my setups instead of this conservative guesses I have to work with. It would be worth it for me to pick up the PCM, wiring harness, fuel rail and fuel pump just to be able to spend the $500 on the tweecer and have full tunability.
Of course, if the guys at tweecer would ever take the time to crack the return-style codes then they would have a much greater market from the contour/cougar/mystique/mondeo crowd! Seems almost foolish that they haven't done it by now since the vast majority of those cars were return style and since they are finally entering their own in the modifications market.