So far so good. I did alot at once- S/C, 703 injectors, ignition tune up, Gibson headers. Started it to check for leaks and shake down. Still have to add the wideband O2 sensor and wire in the AEM FIC and tune it.
Yes and yes. There is a base tune. You use the stock ecu tune for everything up to boost and then with boost the AEM kicks in the 7th injector proportional to boost, like 1lb=20%duty cycle to 6lbs=80%duty cycle. It also retards the timing proportional to boost, 1lb=1*retard to 6lbs=6*retard.
Sorry I forgot about this thread.
All installed have about 20K on it all is working great. We started upping the boost and last year on a cold night boost spiked to 12.5 pounds and popped a head gasket on the stock 170K engine. Replaced the head gasket and added a 505 big valve ported head, larger 80lb/hr 7th injector and new head bolts. Still with stock cam and 1.7 YT roller rockers and WOW what a difference. Now at 0 boost there is acceleration like 3 pounds boost before. lost a little boost with the better flowing head, but still see 10-11 pounds boost. With AW4, 32" MTR and about 1000pounds added, it flat hauls. Haven't re dynoed it but expect around 265+rwhp and 325+rwtq (low estimate). Was at 211rwhp and 274rwtq at 6 pounds boost before the head and upping the boost. Head adds ?about 30hp and the additional 4 pounds boost adds ?20%.
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