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I have a condition where the engine is sputtering and has an occasional minor backfiring through the intake but only while using the two step under load. The edash shows lean afr during the popping. I would first consider this being due to a vacuum leak, but I cannot duplicate the problem when...

I have another noob question. Im seeing very high O2 corrections in the 20's at WOT after changing 160# to 210# injectors and making the changes in XFI 2.05. Its able to hit the right afr's but its on the ragged edge. With the 160's still installed, O2 correction shows high on a 1/4 log dated...

Any help is certainly appreciated. Ive searched all the Googles for several days now. Most of what Ive read involves adjust VE tables, but it doesnt seem like thats right. My combo is listed in my sig with the only a recent change from Racetronix 160's to Bosch 210's. I have already changed...

Had a great time at my first trip to Buick vs Ford. After a few tries I hit a 9.95 in a tagged and inspected, 3660 pound car. Video: https://www.facebook.com/troy.gibbs.77/videos/a.10214593707935578/10214593735976279/?type=3 109 Full Roller & Gridled. Steel Crank, Diamond Pistons, K1 Rods...

First I hope this hasnt been asked before, Ive looked and read everything I could but cant find what I need. And the search feature of the site hasnt worked for me for the last several days. I just installed the continental style flex fuel sensor by teeing off a return line, and connected it...

Im trying to hit 9's which would seem easily possible with my setup (shown below). It seems like I should be doing better 60 ft times. The best was only 1.55. It was hot and humid in the 90's which is part of it of course, the temp gauge never got over 195. The ten passes I made last Friday...

Im trying to hit 9's which would seem easily possible with my setup (shown below). It seems like I should be doing better 60 ft times. The best was only 1.55. It was hot and humid in the 90's which is part of it of course, the temp gauge never got over 195. The ten passes I made last Friday...

Ive searched everywhere for two days without much luck looking for the possibility of switching FAST xfi from e85 to 93 in emergency conditions. I have e85 nearby but there are several events I want to attend that cause worry about e85 availability, including a race at Texas Motorplex tonight...

Im looking for some ideas here to help figure out a solution to a fuel problem. Ive bought a car about two months ago and shipped it from Mn to TX so Im not completely sure of its history. Since its been here Ive noticed degrading power over a short time, once to the point that the car could...

Hey fellas, Ive been searching and searching for two RPO codes on a car Im buying. One is BW3 and the other is 8SJ. Ive looked at the normal RPO lists but neither is shown. Does anyone have any ideas what they are? Thanks in advance!

This guy is literally a mile or two from me making it an easy purchase. Whats a legitimate offer for this thing? Supposedly its "well known in the Buick community", so what makes it a $60k car? Id say more in the 20's...

Good Morning folks! New here, Ive been drooling over GN's since I was in the military in the 80's. Im considering purchasing one now and have been watching many of the usual sites. I have a few favorites that Im watching but I have one in particular that Im unsure of. If anyone could please...