Quote:
Originally posted by BADDGUY6
Hi Julio,
Does the "Initial" & "Gain" knobs do the same thing? Where raising the gain would be the same as raising the initial? Or does the gain ramps the initial setting flow?
And I'm using a Extender Chip how much fuel % WOT should I pull out? I'm at 23# boost 21/19° timing and as the boost goes by 10# I have a surge/miss then hold on I'm trying to get rid of that "surge/miss"
Thanks,
Guy
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The initial sets up a ramp. In other words when the system activates and sprays into the motor.. it sends a voltage to the pump. The higher the "Initial" the higher in pressure the system starts out at. Moving the Turnon has no affect on the Initial.
Now see if this makes sense, lets say you have the system kick on at 5 PSI and ramp to 25 PSI. Thats a 20 PSI window. If you move the turnon to 8 PSI and leave everything else alone, now you'll have at 28 PSI what you had at 25 PSI. Meaning you still have that 20 PSI window.
Now.. hope I dont lose ya, if you turn it on at 8 PSI and want the same amount you had at 25 PSI you need to increase the gain. To make more increase with the lesser 17 PSI window.
The gain multiplies the the signal from the MAP directly...
Both will increase delivery, but here is how you play with it.
The LT1 and LS1 MAF's .. and some of the older translators can show issue becuase they are more susceptible to airflow disturbances within the pipe. If you have direct scan and record a run, you will see the MAF signal does a saw tooth waveform.
Funny thing is some cars do...some dont.. and this is with the translator. I have heard of some having issues with the "PLUS" when running the wires by the alky system.. interference.
Try and start the spray at a higher boost level, like 8-10 PSI, and also increase the "Initial" to like the 1 o'clock position. That way when it activates.. it also come on stronger and gives a steeper ramp. You can have the system come on at 12 PSI if you wish,or 14 and still deliver plenty at higher boost levels.
And, you can verify if its a translator/extender issue by swapping in a stock GM MAF and regular chip.
So.. check with Bailey(TurboBob) to make sure you have the current chip in your translator, make sure you have an up to date extender chip, make sure your scanmaster readings are within specs especially with the BL numbers, make sure the extender chip is for alky, Try leaning out your idle fueling and wot and more than likeley your problem will go away.
You can also try lower fuel pressure lets say to 40 PSI line off and bring the motor up on boost to 8-12 PSI and see if it cleaned it up.
Tuning takes work. And when it comes to chips... remember the only way to get a correct chip is working with a chip maker until its rite.
No walk in the park sometimes, keep your boost moderate playing with different settings. You'll find the sweet spot eventually.
HTH