So I've been working out a plan in my head and trying to figure out the best order to do the mods I've got planned. I've noticed something from the ScientificRabb
it.com site that personally would I'd like to see. Although they give some good data on what the intake will do to help, they don't offer much else. Basically I want to see what doing each stage will do to the over-all performance of my car.
So.... Is there an inexpensive place to dyno around here? How much is it to dyno a car? What's reasonable? I thought I saw a dyno at the DATR event that only cost $60. I'm seriously curious about what this thing will do throughout the build. In particular, I'm interested in what each mod will do. So, given I can space out the build enough (a.k.a have the money to do it) I'd like to put the thing back together and dyno it in stages to see where and what things help it.
My thoughts are:
1st run: baseline dyno in stock 'as is' trim. I already know my stock exhaust is severely restricted and you can actually hear it when you drive (that its plugged, sounds like 'tthhhhhhhhhh' ~ if you know what I mean).
2nd run: + Race header and TT exhaust (on its way)
3rd run: + Install 1987 Mk2 8v hydraulic head w/ .020" shave and 276 cam (have head, cam on its way, needs cleaned and shaved/Decked)
4th run: + Ported intake and Fox TB. (have TB, ScientificRabb
it manifold getting built)
5th run: + Ported head (maybe distant future)
6th run: + ABA block swap (distant future)
7th run: + Turbooooo (way distant future)
This is not set in stone. I'm thinking this is the 'order-of-business' for the GTI, and probably the best way to go about putting the mods on. Each 'run' builds on the earlier run. Here's the reason I'm choosing this order:
First, it seems that the exhaust is something most people do, and its usually done first (since its relatively inexpensive) and requires the least amount of work/tools.
Second/Third, is a tossup between the head/cam and the induction (intake/TB). Sure the intake is cheaper to do, but you really don't see the gains without the head/cam being done. What do you guys think, should the intake/TB be done first, or the head/cam?
Fourth: Ported head. As I've already upgraded the exhaust and intake systems, and the new cam is allowing more air in, the next logical step is to port the head. The way I think of it is that the intake and exhaust can now flow more, the bottle neck in the system in the actual passages in the head. After this, the top-end of the motor is completely 'opened up' and there's not much more I can do 'up top'
Fifth ~ an ABA swap. Since the top-end is all built, the only thing left to do is the bottom end. So the 1.8 system will be swapped out for the ABA 2.0 ~ maybe a 2.1 kit! (now I'm really dreaming). I will add length too, or find another, header for this stage.
Sixth (and last) ~ Turbo kit. This is way in the future, if I even choose to go that far.
I assume that the later runs will yield less gains as you approach the limits of the motor, so I'm saving the most expensive/"more complex" stuff for the later parts of the build ~ which coincidentally also allows me to save up for the next them

~ so what what flaws do you guys see in my logic here. Again, I'm not a high performance guy anymore and I'm trying to figure out what seems the most logical order of doing things.
Any ideas/feedback?