[QUOTE=ECU Pirate,May 13 2008, 08:34 PM] was making 4.5psi of boost according to the readout.

 

267 with a boost leak on a Mustang dyno is pretty good. Once you find that leak and fix it let us know the new numbers. Also, do you have any other supporting mods?

 

No. Probably should have done an exhaust setup first, but I can't seem to find one that has a "stock" look. I am going today to get new couplings for the sc to ac, as well as t-bolt clamps.

 

I was told by Chris today at Science of Speed that I could adjust the fuel pressure regulator to help with running lean...Will try that when I have a chance to get on the dyno again.

 

Yes you need to loosen the top lock nut and take an Allen key and screw the post in to richen I am told, but you really should have a AFR gauge so you can see where your at at all times safely, especially if you need to make an adjustment like you do currently. It gets expensive to go to the dyno every time you find something you need to change, and sometimes thats too late. Your playing a risk game. You invested in the SC, be smart and invest in the proper monitoring gear as well. I would get a boost gauge also. Boost gauge $80-$100 Good AFR monitor $250-$300 You don't need a dyno or tuner if you have this stuff. Good luck

 

dyno'ed again tonight, and was able to get the afr to 12.8:1 right at the vtec engagement(using the fuel pressure regulator). Made a little less power, but I would rather be safe.

I will be getting a wideband af gauge and boost gauge soon.

thanks

 

[QUOTE=ECU Pirate,May 14 2008, 09:06 PM] dyno'ed again tonight, and was able to get the afr to 12.8:1 right at the vtec engagement(using the fuel pressure regulator).

 

the 12.8:1 only happens for a blip of a second right at vtec engagement with the surge of boost. It stays in the 11's and low 12's for rest of the curve. The tuner thought that would be perfectly acceptable. Also, yes i did install the walbro 255 fuel pump as part of the installation.

I do not believe the belt is slipping. It is tight per the verbal and written instructions I received from Science of Speed. They said to tighten it to where when a straight portion of the belt cannot be turned more than 90 degrees with the thumb and forefinger. Also, if the belt were slipping, wouldn't the hp/tq curve be jumpy or just fall off? It stays smooth and builds power all the way to redline. When I hooked up a boost gauge from a friend, the needle pegged at about 6 psi and stayed there until redline. The boost gauge is about 1 psi off though. It sits at 1psi when not hooked up. Perhaps the dyno's boost reader is off a bit. Also, the dyno guy said that I might not be able to make the full amount of boost due to the lower air density and elevation here in Las Vegas.

 

the Invidia V4 exhaust looks like a great option for a quiet 70mm exhaust that is affordable. I plan on getting one for my setup.

 

[QUOTE=ECU Pirate,May 15 2008, 07:19 AM] the 12.8:1 only happens for a blip of a second right at vtec engagement with the surge of boost. It stays in the 11's and low 12's for rest of the curve.