Re: Any advice appreciated
To add on to what Kev stated:
TBI does not work optimally with any dual plane intake. There can be reversion issues and uneven cylinder fueling. They don't tell you this.
"Self Learning" systems without manual tuning functionality do not function well on engines with low vacuum, like 10" or less. You need to be able to scale the load mapping properly and set up the idle cell properly with lower vacuum. They do not tell you this.
"Self Learning" systems do not function optimally on manual transmission cars. Each gear has different fueling requirements across the load points so the system might adjust the long term map while you're in one gear, then when you hit load/rpm point in another gear the value is off and short term trim has to adjust a lot. If you can't adjust step jumps and transport delays (which decide how much short term adjustment is done before the long term map is adjusted) or tune it yourself closely so closed loop is handling everything with learn turned off (how mine is set up) then you wind up with a lot of AFR spikes and swings during normal driving that you feel. Say it with me....They do not tell you this.
Avoid any system that is solely "self learning" with little user input.
If you have the cash, go with multiport out of the gate.
Customer service is going to be just about a wash with all of them. If you want service then you need to buy your system from someone who sells and services them, like some of the tuners that post on the FAST forum for example.
Tick Performance has the best prices in the world on FAST, bar none.
You can do it, don't sell yourself short on what you can learn thanks to the internet.
Dart 400-AFR 195-224/224 HR-Powerjection III TB with F.A.S.T. Sportsman XFI
TKO 600-Moser 3.42-Detroit Truetrac
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'69 Camaro Beater-SFT 327-M20-Moser 4.10-sold
'02 Z/28 vert-stock-sold and totaled