I was wondering if Honda-Tech can help me with two problems. So I wont hit you with too much at one, I decide to make it two threads. Here's thread #1

Background info:

Car: 88 CRX Si

Block:
-84.5mm B20b
-ITR style pistons
-stock rods w/ arp rod bolts
-KMS block guard
-KMS girdle
-arp mainstuds (for gsr + the matching gsr components)

Head:
-b16 head
-3angle valve job
-KMS valvetrain
-CTR cams

Bolt ons:
-Skunk2 intake manifold (1st gen)
-70mm Omni tb
-3in AEM CAI (with BPi V-stack)
-Hytech Replica
-no cat
-2.5in exhaust
-AEM fuel rail
-DSM injectors (440cc)
-adjustable fpr

-Motor has about 4k on it
-Tuned on e-c-tune


Problem #1
(I'm going to try to explain this to the best of my ability) For some reason my car has like a miss (or backfire, or putt, or hesitation) when I cruse around 60-70mph and also when I decelerate (sometimes). I originally got tuned this summer on my stock (240cc) injectors (+ higher fuel pressure), then when the temperature dropped (this past October), the miss came. I assumed it was due to running lean (since I was at 100% duty cycle when I got tuned). So I put the car down up until recently. I swapped in DSM injectors and changed my plugs (NGK 7 heat range), and got retuned this past week. Fixed?!? Nawwww. I just drove the car 100miles, and during my trip the miss (or whatever you want to call it) came back again. The car made great power when I got it tuned, so I'm happy about that. But I'm very picky when it comes to my car, so this miss is bothering the hell out of me. So if anyone can help me diagnose the problem I will greatly appreciate it.

Dyno for those that was wondering about my #'s

 

Any ideas?!?