regardless of how matt comes across, this is the truth:

your car should be running 12.5:1 or richer across the board when you are in full boost. Remember, the higher the X:1 number is, the leaner you are running.


EXAMPLE:

13:1 LEAN
12:1 normal
11.5:1 safe
11:1 RICH

Call JWT. Tell them that 'hey when my boost kicks in im running about 13:1 fuel' They will tell you something is wrong. If they dont they're not giving you good advice.

Your car is not producing enough fuel when you are under boost. This will hurt your car over the long run. Realistic is 12:1, conservative should be 11.5:1 (which is where I would tune my car to).

13:1 is pushing it my friend. No one here is directly trying to be mean, but a lot of us speak from experience and knowledge and take is as that and nothing more.



On to another 2 ideas that may adress your problem.

1. fuel pump: in a previous post you mention a Walboro but ur website doesnt list it as a mod...is it installed?

2. your intercooler: u have to do some ducting to get it to cool down. This could have a big effect on your A/F reading. Unless you do a hood vent to bring some air in (not recommended), then you really need to think about front mounting that I/C.

For my personal car I would NEVER drive it hard at 13:1. If you doubt my knowledge may I suggest you try calling SR20 Development. They seemed well knoledge in the NA turbo kits on the front drive SR.