the first guy suggested doing a boost leak test. A boost leak test should be the first thing you do to diagnose engine problems(unless they're obvious) since they can cause so many issues. Poor idle, excessive taper, rich afrs(or lean at idle) to name a few. Do a boost test.

 

i know you were . no harm no foul.

 

i suggested it jesus is it that hard to get a straight answer... Is it supposed to taper that much or no...

 

dont know, my 8 didn't that much when i was on the stock turbo. My 35r controlled by aem holds 23 psi right till 7k

 

ok so just got around to doin a boost leak test and the results were....there wasnt a leak to be found anywhere! Dammit

 

Not surprising, considering your taper is normal for a IX.

 

23 to 17 normal?

 

Yes, IXs taper more than VIIIs due to the MIVEC pushing more through the head than the turbo can keep up with. You still make lots more power than an VIII maintaining 19psi - people spend WAY too much time worrying about "boost taper" and too little time worrying about how the car actually performs (i.e. track and dyno).

 

well it performed like **** at the track thats kinda why i was abit worried about... that and every other IX in tucson seems to be holdin 19-20

 

People claim that all the time. If they show you MAP sensor logs of their IXs with 20psi at 7000rpm, then you can believe it. If and when that happens, please post them here for me to see...

if it performed poorly at the track, then log it next time to see what your AFRs and timing are doing all the way through 4th.

 

+1

 

ill have to do that didnt think there'd be any issue with the Dynoflash tune but ill give it a try

 

I didn't say it would be the tune - that's another thing that people automatically assume. Just because the car may be running poorly, it doesn't mean it's because of the tune. Tracking the AFRs and timing is not for determining the quality of the tune - it's for finding symptoms of why you're not running as well as YOU expect (if that's the case). It may end up pointing to the tune, but don't assume that up front.

 

did your car taper that much when it was stock?

 

well if there are 0 boost leaks the boost was the same as when tuned with the same gas(i only use one station) why would the A/f's timing/ knock be out of whack other then a tune?? Not bein a Dick Just honestly wondering...