I would like some help discerning these autotap figures. A little background. I installed dynatech LT's, custom 3" x, and dynomax bullets. I didn't dyno what I expected by any means <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" /> . So here we are. Nineball advised me to make sure my collectors aren't leaking. From what I can hear and feel they aren't. Is there any way short of pressurizing the exhaust with a guage and hand pump to check for bad leaks?

Heres the nitty gritty.

I'm getting KR ( up to 6 degrees <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> ) during light acceleration in a high gear. I'm betting this is from the vibration caused by the exhaust. The vibration is considerable, however, it isn't loud per sae. Luckily this isn't really an issue since this is only happening during normal driving conditions when performance isn't that important and the car shifts into higher gear before necessary for fuel mileage. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

Knock Retard Autotap Screenshots

At WOT the KR is non existant until deceleration when the vibration again increases <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" /> . However, my timing advance stays in the low to low-mid 20's <img border="0" alt="[barf]" title="" src="graemlins/gr_barf.gif" /> . Nineball advised me that this should be about 28.6 degrees. So my timing is running really low. My o2's are way high in the mid 900 to high 900's <img border="0" alt="[barf]" title="" src="graemlins/gr_barf.gif" /> at times, so I'm running rich at WOT. Could this be the cause of the low timing, or the affect of the low timing?

Wide Open Throttle Autotap Screenshots

I've thrown 3 codes since the header swap.
P0410 Secondary Air Injection System Malfunction <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />
This I believe is due to the fact the the factory manifold contains an air tube and the dynatech's do not. I ripped off the factory air fittings from the factory manifold and just left the hoses blowing air into the top of the engine compartment. The air pump for this has made a loud whining noise since about 20,000 miles and I know its just part of the emissions BS <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" /> . I hadn't had time to delete this pump, nor will I until I can get the car tuned.

Any suggestions would be nice. Does my explanation for the KR sound reasonable? What do you think about the low timing and high o2 readings? Does this air pump make a lickity split of difference?

Tony

<small>[ February 14, 2003, 11:44 AM: Message edited by: Turk01SS ]</small>