davenew

Here's some background. I've used 100 octane for the past year or so. I filled with 93 recently due to being dead empty and not wanting to drive over to the sunoco. I immediately noticed the boost gauge showing 17-18 psi, tapering/flat-lining to 15 psi. The car has the acceleration of a rental ford festiva. I know for a fact that the 93 code ran 20+ psi this past summer.

OK, I thought back and remembered that I tweaked my new N75 awhile back, so I assume I screwed it up. The 100 software doesn't run much more than 16-18, so I didn't notice it before. I went ahead and spent $110 for a second new N75 while I was at the dealer getting other stuff.

The new N75 didn't change the boost from 15psi! I went out to the garage and did a very thorough boost leak test last night and spent over an hour trying to find the slightest leak. It was a waste of time.

Here's the graph that I just recorded:
<img src="http://dave-new.com/S4/1st_and_2nd1.gif">

Lesson: Log data before you do anything else.. I didn't have a boost gauge last winter so I didn't know the 93 code (apparently) runs lower boost when it's cold.

I'll be glad to get the new software

Mark P

tomorrow

X - 1 _ r a c e r

Dave, my car on 91 crap is as fast as it was on v1.2 100. Get new code.

Mark P

Dave tried - A-box not ready yet ;-) Don't taunt him more!

davenew

I forgot to tell you, the current 452hp dyno chart on APR's site says it's for 100 octane, not 104.

X - 1 _ r a c e r

My bad, sorry Dave!

davenew

just what I need.. another kick in the groin J/K

Mark P

I think perhaps it should have said 104 - oh well, we'll see what the new stuff says...

Dr. Jekyll

You *could* get the M code and convert the MAF to hitachi. No waiting then :-x

davenew

nah, it should only be another day or two