My self-tuned 71HTA S1/S2 IX
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So I've been reading several of Sparky's WGA rants and I've decided to take mine off and cut about 3/8 off it with a cutoff wheel. See if I can get it preloaded a bit more and go from there. Looks like for my goals and desired boost (25-26 psi), I'll be fine doing that and save a little money.
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And we have more! Got my boost leak tester today. Had leaks at the BOV flange, mid-section of the UICP, a huge one by the battery and, once I got all those sealed up, my TB is leaking like a sieve. Funny thing is, it's not leaking by the throttle cable or the BISS screw, it's leaking up by the vacuum port connections. I wanted to upgrade that SOB anyway, looks like I can now 
Todd

Todd
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And we have positive results! I'm still on spring pressure but after the added preload and boost leak test I am seeing full spool, albeit only 16-17 psi, at or before 3500 RPM in every gear. I ordered shaft seals to get those installed this week. I did some more reading and I think the air I was feeling was coming out by the TPS and I forgot there was a seal there as well.
I'm still confused as to why, after hacking 3/8" off my WG actuator and *still* bottoming out the turnbuckle, why I'm only getting a little over 16 psi. I imagine it will go up a little when I fix the TB but I don't know, I guess I just expected more...
Todd
I'm still confused as to why, after hacking 3/8" off my WG actuator and *still* bottoming out the turnbuckle, why I'm only getting a little over 16 psi. I imagine it will go up a little when I fix the TB but I don't know, I guess I just expected more...
Todd
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From: South Bend, IN
Before and after overlay:

I now have some cleanup to do as I'm hitting parts of the map I've never really hit before but, that's a good thing. Power is down but I can chalk that up to the temp being almost 40* higher today when I did the pull than on the 418 pull, as well as dropping a little more boost. The latest run was my first run since going back to the 3 port and I was just checking that my boost level was a sane one. She can take more, I know that much.

I now have some cleanup to do as I'm hitting parts of the map I've never really hit before but, that's a good thing. Power is down but I can chalk that up to the temp being almost 40* higher today when I did the pull than on the 418 pull, as well as dropping a little more boost. The latest run was my first run since going back to the 3 port and I was just checking that my boost level was a sane one. She can take more, I know that much.
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