- Jul 21, 2004
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After 2 weeks of working with tweecer i am sending it back . tried everything possible and it is causing error codes in my cars eec and the car ran terrible. 


It is great that worked for you. Some people still end up with driveability problems even with an A9L, so it could become an expensive option fairly quickly, if you end up having to get a tuning device anyway.greenlantern said:See this is what I didn't want to have to deal with. Don't get me wrong I understand that the tweecer is a great way to modify your computer but I went for the A9L conversion instead. Put it in and forget about it. Way better performance that the stock T4MO and the J4JL.
Part of the problem there is C&L. They do not believe you should tune your computer, their opinion is that the so-called "calibration" they provide with their tubes is better than anything you can do with a computer. That's why I bought a Pro-M MAF instead, because it comes with a flow sheetmust b a stang said:I did try the basic changes first and had no luck , tried the MAF transfer and injector slopes also called C&L which makes my MAF and also had no luck with tring what he said .