I'm now running the motor I was building when I started this thread. Rebuilt stock forged piston bottom end from a 91 5.0, trick flow tw 170 heads, holley systemax 2 intake, 70mm throttle body, upr boostmaster pipe, bbk shorty headers, bbk catted x pipe, flowmaster delta 40's, f cam, 3.27 gears 2975lbs
I now have an msd 6 btm, and an aeromotive 1:1 rising rate fuel pressure regulator. zI set my fuel pressure up exactly how aeromotive recommends 48psi without the vacuum line hooked up. Running MSD wires, and ngk plugs gapped @ .035 Have only on rare occassion heard detonation, but it's very infrequent. Still no tune.
With a nearly new engine complete with sensors and all it's running a lot better than it used to.
My SN 2000 has the upgraded impeller. 6" crank pulley 4" head unit pulley. I've seen about 7.5psi on my boost gauge
-Now I just need to find out how much timing I should be running for CA 91 octane on the street, and how much total timing on sunoco 100 octane at the track. My computer is an a9p, so it has more aggressive timing curves than an a9l.
ECU 1000 rpm 1800 rpm 2600 rpm 3500 rpm 5000+ rpm A9L 8 ° 18.5 ° 22.5 ° 22 ° 26 ° A9P 21.25 ° 21.25 ° 27.25 ° 26 ° 30.75 °
-Updated Info:
Got my wideband installed today 3-28-13. I picked up a new lc-1 setup and installed it. I did some adjusting today to spark and fuel. I wound up running out of time while tuning(had to get ready for work), but as soon as my rpms hit 5k+ it goes lean into the low 13.x range. This is after turning the msd btm up to remove about 2.75* timing per lb of boost. My base timing is 8* btdc. As you can see by the graph above my A9P computer adds in a ton of timing, 30.75* advance @ 5k+ rpm. I also turned the base fuel pressure up to 55psi & am using an aeromotive 1:1 rising rate fuel pressure regulator & still runing out of fuel. I'm thinking I need to get an A9L computer to be able to properly adjust my setup since I would rather not run base timing of less than 8* btdc.
Update
3-31-13 Installed an A9L computer yesterday. Turned BTM down to 1.5* timing retard per lb of boost. With the A9L installed my wideband instantly stayed in the 12.x:1 air/fuel ratio. Now I just need to get out there and dial it in more. It feels so much better than when I had the a9p & pulling 3* per lb of boost.
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