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[nmandic]

Originally Posted by ktwillys

Ok so I checked them all and the 2.5 row is higher than the 0 row.. alpha n increases as the throttle increases and decreases with the increase of the RPM

Another one from before then:

Delta based TPS multiplier will help you in this area. Because of the increased flow of the BC TB, you need to accelerate the amount of fuel per your TPS reading. You also probably still do not have enough fuel at idle, especially if you have not adjusted the idle mixture since you installed the new TB. If you have to, idle at 12 or below AFR and get your IAC steps as low as you can in the in the 30 to 40 idle range. Experiment with 28 or so also. You have a lot more air with that TB and you have to compensate.

... here I noted that Delta based TPS multiplier value is already 120 from Delta TPS 12% and UP; and the comment was:

The 0 throttle position is good up until 0 to 12%. And that position is NOT set for max of 120. Also you have accel enleanment decay rate on the parameters screen. Those two and a little timing adjustment will have that Gerolamy TB and the rest of the bike leaving the line without you. Keep in mind when you go to big air TB that you need to have the other components to go with it or you will lose some throttle response.

Please note that this comment may have been made when we had single sensor TCFIs however you may always check setting and set Fule Multiplier to 120 @ 0 Delta TPS.

Don't know if this helps at all - but it's like puzzles of information scattered around; you think you see the picture and then you don't.

I am still struggling with cold start - sometimes it starts sometimes it doesn't. The guys from DTT told me that Due to the limited size of the IAC pintle (intended for a 88 CID engine), on large engines you will have to hold the throttle open (after the fuel pump stops running and initialization is complete) to successfully start the engine in cold weather conditions. Not sure if that sorts out my problem

I see GRock hasn't been around for a while ... did he migrate to another forum or just got bored with all these issues?