lilazni3uoy said:
won't you need a usdm 6 speed or auto ecu with the egr wiring, and also usdm exhaust manifold for the usdm twins, usdm wiriging harness or else the engine check light will just come on, man pushing over 500 and be legal at the same time...i'm not sure man, i know where your going with it, but i don't quite see, it being over 500 hp can't always guestimate, game gets old:sarcasm: just because stu have over 500 hp, doens't mean he don't got tricks up his sleeve which won't be legal in the state of california, and you need 2 cats, 1 on downpipe and the one in the middle and that will have you restricted, i highly doubt you will see 500
I already have an entire USDM exhaust setup, manifold, turbos, y-pipe, everything. I'm going to try and fit two cats in there. I already have one in the stock location, and I'm pretty sure I can get a stock MKIV cat in place for smog purposes. (This of course doesn't mean it's going to stay there in between visits to the station.)
EGR operation is a very simple thing that can be accomplished in a few different ways. One possibility is swapping to a USDM ECU and making the appropriate wiring adjustements. If I do it right, it can even increase my fuel economy.
However, there is another issue...*
Tricks up whose sleeve? I can have those too! If I really need it, nitrous is legal on a street car as long as the bottle is disconnected when not at the track... I'd be happy with roughly 500hp on boost alone. Beyond that, I'm flexible.
Poodles said:
haven't heard of one MKIV on stock twins beating a new ZO6... I've heard of lots of small single guys losing though...
I hate to be a stick in the mud, but your goals are very high. The ZO6 has a huge weight advantage on you, have far better brakes and can support larger tires than you. Beating it around a course is gonna cost a hell of a lot...
Yeah, it's going to be difficult to reach my goals, but it's going to be fun trying.
suprastanger507mgte said:
For it to be Bar'ed and smog legal in California, it probably needs to be setup using the US model Harness to work with the egr electronics/sensors/vsv's etc/, and that in itself is MAF based system as well. But I'l watch this and take notes
.
Car sounds very nice and healthy for sure as is.
You are very right. Since all those things you listed are emissions stuff, they will indeed need to function properly. *(continued from above.) There are two VSV's that matter: the evap canister purge VSV and the EGR VSV. Both of these can potentially be controlled by either a stock USDM ECU or any EMS with programmable outputs. The EGR will need to open under certain load conditions. Open when cruising, closed at pretty much all other times. The evap VSV is supposed to open when the engine is in a specific temperature range. Again, both of these things can be programmed.
However, there are two more issues that must be addressed: the AFM and the CEL. As far as I know, the existance on the AFM isn't something a smog tech is going to look for unless be becomes obvious that something is out of place, and since the lack of the AFM doesn't change the vacuum, vapor recovery system, or any other emissions system, it should go unnoticed. The tricky part is here: the diagnostics port and check engine light.
The smog tech will always jump the service port to check for codes thrown by the computer, displayed by flashing the CEL. With an aftermarket EMS, this simply won't work. This means I really have no choice but to change over to a USDM ECU.
Personally, I hate AFM's, and unless I have to, I won't be installing one to allow the use of a USDM ECU. Lucky for me, there are many piggy back computers that will fake the AFM signal based on input from the MAP sensor. The one that comes to mind is MAP-ECU2.
Anyways, there are lots of issues to deal with. Most of them aren't terribly expensive or difficult, and I've got plenty of time to figure it out. Right now my focus is getting the twins on there and making it visually sound enough that your average idiot won't know the difference.
Collin
