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Old 09-27-2013, 07:11 PM   #341
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May have found out why the Mustang can't get going in first gear. We did a datalog with the SCT X3 tuner and the AFR from 1000 to 3500 RPM's are lean, then at 3500 RPM's the AFR goes to 12:1 and that's when the car finally takes off. I sent the log to BAMA and hopefully they will fix it.

Still waiting on the intake manifold which was supposedly sent last week. Been 5 weeks since I sent it back.
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Old 10-10-2013, 01:58 PM   #342
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Got bored and decided to do a dyno run today. Did 3 pulls, but the first pull didn't have the RPM reading right. The operator said the car looks like its pulling a lot of timing so I'm going to see what Arno can do. He did managed to get all the way to 7200 RPM's though.

During the 2nd run (the one I recorded) a puff of black smoke came out of the exhaust near the top end, hopefully it was just some oil that made its way through.

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Old 10-10-2013, 02:08 PM   #343
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Black smoke is usually fuel. However, you look like you are going lean at the end so I wouldn't think that was it (unless it came after he let off). You do look like it is pulling timing from how jagged it is, but it could also be the tach sensor not getting a good signal.
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Old 10-10-2013, 02:16 PM   #344
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When the ECM senses the lean condition, it pulls timing and dumps in fuel causing the black smoke as well.

Engine sounds strong and running well!
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Old 10-10-2013, 02:18 PM   #345
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Yeah, think I brain farted, white smoke is oil. Could bad gas also cause the timing to be pulled?
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Old 10-10-2013, 02:22 PM   #346
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Yeah, bad gas can do it.
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Old 10-10-2013, 02:26 PM   #347
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Will try to go next time after I put 104 octane in it from the track. Should be going back soon, I ordered 3.73 gears for my wife's Mustang so she can make Camaro boys cry.

Car does sound damn good on the dyno, felt like the ground was vibrating near the end of the run. Just hate having these small issues, if only we had a better ECU.
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Old 10-10-2013, 03:00 PM   #348
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I wounder if the LT headers HC cats have anything to do the the much timing advance? agree the black smoke is fuel.
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Old 10-10-2013, 04:06 PM   #349
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Talked to Arno and he said more than likely it was the intercooler being too hot from not enough air in front of the car and the engine pulling timing and running rich to save itself from destruction. Will see how the car does on the track, that should be a better test.

Think I'm also the first to get the RPM's into the 7200 RPM range on the dyno graph.
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Old 10-10-2013, 04:53 PM   #350
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That comes out to about 400HP and 350TQ at the crank which isn't bad, but I'd expect to see a bit more out of her considering the higher numbers we've seen from other IPF cars.

Maybe it was heat, or maybe something else who knows, but hopefully she runs great at the track where it counts!
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Old 10-11-2013, 03:18 PM   #351
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I heard not all dyno jets read exactly the same. I say they read on the low side.
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Old 10-11-2013, 06:25 PM   #352
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I'm glad I did the dyno, showed that the car can rev to 7200 RPM's and nothing bad happens. Last night when I went to get a milkshake for the wife (made her very happy) I put the car in manual mode and revved it all the way to 7200 RPM's and she was pulling strong the whole way. Ready to get back to the track now, need that fire jacket though.
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Old 10-11-2013, 06:38 PM   #353
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What's the best dyno to get the best read?
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Old 10-12-2013, 12:13 PM   #354
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I like the dynojet just the one set of rollers,for the rear. The mustang I beleive has front and rear.
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Old 10-12-2013, 12:16 PM   #355
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What do you consider the "best read"... You should always dyno in the same dyno to get the real results.
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Old 10-12-2013, 12:26 PM   #356
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Quote:
Originally Posted by sycraft View Post
What do you consider the "best read"... You should always dyno in the same dyno to get the real results.
Meaning where the numbers are really accurate? Last time I got a dyno read I was told that my car was pulling back timing and my numbers were extremely low? Haven't done any base runs yet.when I dyno tune it will be at the same dyno.
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Old 10-18-2013, 01:48 PM   #357
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Just an update since I'm waiting on the 3.73's for the Mustang before we go back to the track...

CAR FEELS F'ING AWESOME,SCREW THE LS-CRAP V8'S, LLT FTW!!!!

That is all... (having fun with all issues fixed)
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