With just myself in the car, the car accelerates pretty well and does everything it should. The Engine runs fine, turbo spools, however sometimes the car feels more responsive than others, kinda sluggish sometimes, but other times its gets up and goes great. Also has hard shifts sometimes. But as far as the loads, when i have more than 3 people in my car, weighing in around 180-200 a person, the car sputters when trying to accelerate and get going, I understand the whole concept behind the extra weight, but does anyone else have that problem, or is this leading to a problem?

 

Could be many things bro but I would check your tune parts first,compression test.. then vacuum leaks...then check fuel pressure then your MAF...could also be a weak turbo..any black smoke out the exhaust?

 

I like to go with the simple stuff first. "Misfire under load" is a classic symptom of bad spark plugs. If you don't remember/don't know when they were done last, you might consider throwing in some new ones. It's a maintenance item anyhow, so the money's not wasted, and you will have eliminated one possibility.

 

No black smoke, the plugs and wires 'look new', however i have no clue. i think some/alot of my vacuum hoses are cracking cus my idles off and theres some hissing in the engine bay when im listening around the hoses and some visable cracks near the connections. I know those are easy to replace, but the different sizes? How do i go about getting the right tubes and fasteners for them to replace.

 

As far as a fuel problem, im thinking of getting a fuel pressure gauge, whats the best kit for that and how hard would it be to wire it up?

 

snap on has the best kit but very expensive..check out your local pawn shops a lot of mechanics are pawning their tools because of the economy...I have found a TON of stuff and it's all usually snap on,matco, mac etc...for the vacuum hoses, Napa or any specialized auto parts store should have any size you need just cut a piece off and take it in to match up. Also to pin point a vacuum leak get a can of starting fluid and while car is running spray around the hoses if car idles up you found your leak...good luck