Quote Originally Posted by iNsTuN nOoDoH
Does it lag when you floor it? If it does try borrowing or using your old map sensor and see if that helps out. If not then probably the ecu. Just get that p28 chipped for uberdata and get it tuned. Ask scotty for any of the uberdata chipping stuff. That might help.
I respecfully appreciate everyone here being nice to the fact that my knowledge is limited, and thank you again for helping me out. I love learning about cars now. Some people i talk to you get discouraged from learning cause there like "Uh, duh!!! It the xkhembqmbz that's causing the djbwbmb to act up." (Like your stupid for not knowing that.) LOL.

I can verify that some of the problem is definitely a lag when i step on the gas petal. In fact, i've had times when i gas it and it acts like it stalls for a good 2 seconds, then starts to move like i turned the ignition off for a couple seconds. But sometimes it runs ok at a takeoff, but still very noticeable slower then before the engine swap. Like it's in 2nd gear (comparing similar torque) but not QUITE as bad, but like 1.5th gear if there was one.

I don't have the old engine, so i don't have access to getting the MAP sensor unfortunately, but the ECU does make a lot of sense to me having a computer module that's adjusted and tuned for one engine, currently hooked up to a different engine. One thing i'd want to know is, if i had my current ECU chipped, would it be possible for them to redo it for matching my new D15B engine? Or would they only be able to tweek it, and still really not be right to match the new engine? Who's this scotty person? In these forums? or someone at Uberdata? SOrry if these sound like stupid questions, i just don't know and want to know more so i understand everything. Thanks guys.

One last thing, if i got it chipped (if i can still use my old ECU for my newer different engine type + maybe some tweaks) i am guessing i would be without a car during that time? Or unless i just bought one either done, or bought a used one for my engine and had them tweek THAT one. I can't be without my car, i have no other transportation to/from work.)

I don't know if Derek from Lethal Injection Tuning is on here or not, just got recommended from your friend Mark at Advanced Auto parts who hightly recommended you, and called you tonight about my car.