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I shouldn't need Alpha N mode, my cam is only a small hyd roller, 242/248@.050", .541/.562 lift.

The density has decreased. The DA lately has been 3200ft, when I tuned it originally, the DA was probably around 1400ft.

I just have an open element filter w/ the IAT sensor in the housing for the filter. So I don't have any kind of "cold air induction" or anything. Once I get moving down the highway, the IATs drop alot.

Hey everyone, I have two questions about my B2B FAST w/ wide band. First: I did all my tuning in the fall/winter and now that the air temps are higher, my wideband is reading lean and the correction % is up in the 10-15% range. I've heard that I shouldn't mess w/ the air temp vs...

Will the plug readings still be accurate after driving down the return road back to the pits, or do I need to stop at the end of the track and pull of the return road and check them?

The valve springs should be okay. They have about 3k miles on them. The motor sounds fine going down the track. I had the logging on 15 frames/pec. On the NA run I reved alittle high and started to get valve float on the 1-2 shift, but the nitrous runs were fine. The IATs were higher on...

You have mail.

Hey guys, I was wondering if someone can take a look at a couple data logs and whole files and see what you guys think. The setup is: 502 BBC 1000cfm TB FAST b2b w/ WB 40lb/hr injectors 48psi fuel pressure I also have a NX plate kit. That's where I'm getting stumped. The...

That's probably it. Thanks.

Hey guys, I went to the track about three weeks ago and did some tuning and making good progress. I went back last weekend and now I'm alittle confused. The only changes was the outside air temp. The heat index was 108*, where the previous run it was probably 65*. Here is a picture...

Hey guys, I went to the track this past weekend and did some data logs. Is it recondmended to run closed loop at WOT for tuning? I was leaner than my target a/f ratio and the correction % was still in the negative. What do you guys think?

Is there still only the FAST wide band you have to purchase to use w/ the system? Or can I get the LM-1 unit and use that sensor w/ the adapter.

The filter on the dyno was brand new. My sensor is about 3 yrs old, about 12k miles.

Hey guys, Has anyone compared their FAST wideband accuracy to other wide bands? Mine seems off. I was on the dyno and my FAST was reading 11.94 and the dyno was reading 12.5:1, this is with nitrous. While N/A, my FAST was saying 12.5:1 and the dyno was saying 13.0:1. So it's about .5...

Okay, I guess I finally talked to someone at FAST that had a clue. They sent me an option file and it all works great. Thanks for your help guys.

I just got off the phone w/ FAST, talked to Matt and Heith. They both said an option file wouldn't help the situation. I gave them my serial # and firmware version and they said it's an older version and needs updated. Something about the older ecus can only control one (fuel, fan, or...

I do have HEI. The guys at FAST just said I can run the fans and nitrous at the same time, maybe he was mistaken. I'll call them again. I am meeting TPS and RPM for activation.

I called FAST and they said I could run both fans and nitrous.?? I'm going to do a couple more tests and see what happens. I have a switched 12v source going to the FAST from the system switch. Then I have the white wire from the FAST going to my fuel pressure safety switch, then from the...

Hey guys, I've hooked up the nitrous system using the FAST, but it's not engaging. The ecu recognizing the signal and the N20 enable switches from 0 to 1. But it doesn't seem like it's engaging the solenoids. I just have the fuel solenoid hooked up right now to see what the fuel pressure...

Hey guys, Can someone go through which wires go where on from the FAST ecu to the nitrous system? This is on a bank-to-bank ecu. I have a NX Hitman plate kit, purge, fuel pressure safety switch. I will be using the relays that came w/ the kit. Any help would be much appreciated...