Maybe know enough to ask some questions?
10-24-06, 01:48 PM
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Maybe know enough to ask some questions?
Okay, I've been lurking and reading and studying so hopefully won't seem to stupid. New guy with S413b in a bugeye. I know this is the gen II section but hey, that's where the engine started life.
They PO put on the RB Holley carb / intake setup. As you might expect, tuanbility of a sledgehammer and no lower grunt. I am planning on going back to a fuel only EFI with the distributor doing the igniton work (from an earlier engine I assume).
So, I'm thinking stock lower S4 manifold with functioning port actuators, one of the many available upper manifold-to-throttle body uppers, a TWM 2900 / 2010 twin throttle body (got to figure out which side I need the throttle on) with TPS, four 550CC injectors (two in TWM and two in stock housing ports) and a fule only ECU running the show.
Engine is ~48k stock non-ported unit in good condition. Still using mechanical oil metering. Otherwise totally void of all EFI plumbing and electrical. RB header to 2" exhaust.
Q's are:
1. Haltech or Mircotech? (F10X or MT/ LT-4) would seem to be the box choice? Other options? Any reason to choose one versus the other? I understand that one of them (?) may allow me to go closed loop if I also do a WB O2? I don't need or plan on injector sequencing.
2. How should / do I acutate the 6 ports? I assume I could use the extra trigger with RPM that either of these ECUs has to acutate the on / off but what source ofr the air pressure. Remember, no stock pumps, etc. and a fairly opewn low backpressure exhaust.
Sorry for the long post. Just looking ot get it right BEFORE the big $s go out the door.
They PO put on the RB Holley carb / intake setup. As you might expect, tuanbility of a sledgehammer and no lower grunt. I am planning on going back to a fuel only EFI with the distributor doing the igniton work (from an earlier engine I assume).
So, I'm thinking stock lower S4 manifold with functioning port actuators, one of the many available upper manifold-to-throttle body uppers, a TWM 2900 / 2010 twin throttle body (got to figure out which side I need the throttle on) with TPS, four 550CC injectors (two in TWM and two in stock housing ports) and a fule only ECU running the show.
Engine is ~48k stock non-ported unit in good condition. Still using mechanical oil metering. Otherwise totally void of all EFI plumbing and electrical. RB header to 2" exhaust.
Q's are:
1. Haltech or Mircotech? (F10X or MT/ LT-4) would seem to be the box choice? Other options? Any reason to choose one versus the other? I understand that one of them (?) may allow me to go closed loop if I also do a WB O2? I don't need or plan on injector sequencing.
2. How should / do I acutate the 6 ports? I assume I could use the extra trigger with RPM that either of these ECUs has to acutate the on / off but what source ofr the air pressure. Remember, no stock pumps, etc. and a fairly opewn low backpressure exhaust.
Sorry for the long post. Just looking ot get it right BEFORE the big $s go out the door.
10-24-06, 07:27 PM
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Originally Posted by snowball
why use a distributer if your going with full standalone. talk about shooting yourself in the foot.
Unless of course you want to give me all of this free as well as the added $s for the more expensive fuel plus ign. ecu?
Talk about putting that foot in your mouth!
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