well had a set of blow by racing cams installed on my 06 gt. Great idle and great mid to top end. For the most part. It seems a little slugish on the bottom end and im not sure if it is just the cams dont have much bottom end or if it might be running a little rich. No CEL have came on. also up top around 5200-6200 (i shift at 6200) it seems like it falls off just a little bit. I was thinking that it might be lean up top. So my questions are has anyone messed with the WOT Air/Fuel setting on a x-cal 2. If so how much would you bring it up? Anything that you can give me will be alot of help. Thanks

 

How do you not already know what your A/F is doing???? Didn't you get it dyno tuned after the install??? Like shouldn't that be the first thing you do after the install is to throw iton a dyno to change the fuel curve and adjust the A/F??? I'm confused....

 

It should be.....

 

No i havent had it on the dyno. Just figured you could just make the adjustments with the tunner if you felt that they were needed. The guy at Blow by said that you doint need to have the car dyno tuned unless you are having trouble with the car running. The car runs fine just a little off. Why spend 350 dollars to have it dyno tuned when you can move things around yourself for nothing (well for what you spent on the x-cal 2)

 

cuz u dont really know WTF u are doing. (i'm i right) just tune the car. after you do a lot of things to a car you think its running fine until it blows and u ask why. cams are not like changing your mufflers. so i think that you should tune it. asap

 

cams are something that should be dyno tuned always, a mail order tune just doesn't cut it for cams.

Andrew

 

Speaking as someone who has spent some time in the tuning business... get your car tuned NOW. Guessing at what your Air/Fuel ratios are is pretty much like playing russian roulette with 5 of the 6 cylinders loaded. Cams are a MAJOR change to how your engine behaves and I garentee where your saying its just a "bit off", your going dangerously lean. I mean, I would assume you have an CAI and judging from the fact you have an X-Cal2, you tuned it for that, but not a Cam?? You should kick whoever told ya not to get it tunedin the head a couple hundred times and never go to that shop again. They obviously missed the point of what a Cam swap does for an engine.

To properly tune your car ( at the very least) you need a wideband O2 sensor. Tuninga car isn't like it used to be, where a turn of a screwdriver and "good enough" was good enough... Plus, I can speak from experience, getting a fuel map right with no experience can take WEEKS of playing with it and you will still never get it exactly right without strapping it onto the dyno and then following it up with a street tune.

 

ok well i will get my car on the dyno this weekend. I was going what a "pro" told me. Im glad that i have asked and that i have gotten such a fast response.

 

Then when you get back from the dyno with your new safe tune that you will get more HP out of....then you post the numbers and the graph so we can see....