^ what do you tune with?
sounds normal, mine goes rich for a split second and then lean if i stay out of the gas. The split second of lean when you hit the gas sounds like the injector correction (term?) that jdub has mentioned. ill see what i can dig up...
The bypass valve opens at high vac and allows air through increasing drive ability at low throttle. Adjuster hit on this point ALONG time ago. LEAVE IT ALONE!
http://store.driftmotion.com/static/i-marlincrawlershiftersocketr154.php
this what you need?
http://store.driftmotion.com/static/i-urethaneshifterbushingforr154transmission.php
or this?
you've had two of the best give you shake down, you should be honored. Usually the old timers (no offense) would ignore or offer very little digging in threads that start so poorly.
Keep the maft pro and sell the other stuff, as for the injectors i would say it depends on your HP goals and if you really need the fuel.
why would you need the safc to tune on top of the maft pro?
^^ my own setup shows this fine line with fuel pressure and the safc.
to much fuel and i cant pull enough out to stay within the 15-20% saftey range on the safc and to little and im adding at idle (on the safc) to please vf's.
40psi vac off would be about 32 psi with vac on, thats a...
there are a few members on here that will put the bottom end together for you. If you cant find a GREAT machine shop in your area i highly suggest it!!! I was going to go this route before i found one i feel is more then qualified.
8% is roughly 1 point in af ratios. look at isnms charts (the man is good with excel!) and you can go from there.
Pleasing VF's at idle was not happening for me with fuel pressure, it caused me to have to pull to much fuel on the safc up top. I used the safc to please the vf's at idle and...
replace the third valve cover as well (covers the sparkplug valley). You can either replace it or use oil drain plug gaskets that fit on the hex head bolts (four big ones).
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