I was running 48 IDA's on my FE and everything was fine, on the street. They are sensitive to Altitude changes and Air Density changes. Living in the humid midwest, in the summer, some days were fine, other days they would lean out and then pop and carry on.
This year I took the Webers off and put on a Borla Weber look-alike EightStack system and it runs great. I really enjoy the easy starting and good fuel mileage. The kick is the conversion isn't cheap. But highly recommended
I'm running a Performance Electronics ECU which has a self-learn feature. Works great, the key to any self-tune system is you have to have a good place to start. You just can't stick it on and expect it to learn the correct tune. You need a decent tune to start and then time to let it learn. It doesn't happen overnight.
Regarding the linkage, if it is done correctly it isn't an issue. You really need to pay attention to any slop and the angles each piece makes. It is totally intolerant but works fine once correctly set. If you're having to re-adjust linkage settings weekly, you don't have a good system.
Paul
