Turbo vs. Super

[TomsMR2]

just noticed you're in california.. keep the stock supercharger. car is almost worthless if you're constantly worried about getting popped by the cops and not passing smog!

[MuMan]

Something about S/C's that turbo's just don't have...maybe it's the sound when you rev 'em..maybe it's the smoking tyres off the line...hell, maybe it's just saying "yeah, it's supercharged"

Wonder if I could get a custom manifold made for a 3SGTE...

[sliverstorm]

Wait, superchargers are covered by the whole CARB thing too!? Oh, wait... that's right, I am supposed to find CARB certified ones. OOOHHH boy... why does CARB have to make my life so difficult. There HAS to be one I can find that's legal... right? Also, I wonder if I'm allowed to mess with the pulleys. I don't know what's worse, how freaking unresonable and restrictive CARB is, or how vague it is.

*sigh* I checked the carb database and there's not ONE supercharger modification listed as allowed on MR2's. At all.

[sleepermr2]

changing anything along the lines of emissions or even that pulley is illegal. chances that the tech is gonna notice? slim to none. also look on the air resources board. they have all the numbers for aftermarket parts that are leagal in cali. that might point you in the right direction as far as your mods. also you can call the BAR. they are very helpful.

[sliverstorm]

k, I will call BAR. Although as for the numbers of aftermarket parts- they seem to not only have specific parts, but specific cars said parts are only allowed in. I'm not 100% sure about that though.

[sleepermr2]

thats how i got by with my greddy IC. i took the E.O. number off the air resources board website and gave that to the inspector.
if everything is running right you should pass on the dyno no problem. the hard part is passing visually.

[sliverstorm]

Yeah, visual could be a pain. Last smog I did was great (cause it cost me $25, special deal) but they were really really picky about the visual, wanted to triple check this inlet on the pipe to the throttle body (I respect that, they are protecting themselves). I am begginging to have a change of heart; I have discovered the 3SGTE makes 140lbs-ft of torque at about 2000 rpm- and that's the peak torque of 4agze. What with that discovery and this whole CARB thing, starting off high becomes increasingly important- I can't tune up high cause of CARB! I think I may just decide to go 3SGTE after all. Time for boatloads of research, and some extra funding. I wonder if it's worth it to go w/ 3rd gen 3SGTE... I've found the 225hp version of 3SGTE for just $150 more than the 4agze woulda cost me. Put another way, is 20 hp worth $400-800?

[sleepermr2]

you can do a usdm gen2 3sgte and have it still pass smog. you will have to take it the BAR to have a ref look at it. but as long as its stock it should pass. however, if you do a gen3 swap it will not pass. no egr and its a JDM motor. but i would just give the BAR a call and see what your options are

[sliverstorm]

yup gen2 seems like the way to go :P Also JDM seems to be the only kind you can get without some serious junkyard diving (and I don't know just how much I want a rusty junkyard motor that's been rustin for years) so I'll have to do JDM and throw a EGR on (I don't think ANY jdm come w/ EGR)

[sleepermr2]

not with an egr that i know of. i know some people get a hole drilled in the head for the egr but i wonder if its actually "leagal" to do.
you can always just find some hole in the wall shop to get your certificate. mine passed with a td06-20g on it. so there you have it

[Ignarius]

I've heard this strategy before! lol. You can find small shops that dont get a lot of business, or shops that are in need of some cash, and sometimes things just happen like they miss a sbc in a first gen Rx-7... Not mine, but hell, if that happened to work, im sure you can find a good one, ya?

[sliverstorm]

Well, JDM motors are allowed in Cali if they are 'identified as being functionally identical to the USDM counterpart'. And considering JDM motors (as i understand) never ever have EGR, there HAS to be some method to the maddness- either you get to keep EGR off, which I doubt, or you can drill holes and throw one on from another car (probably has to be from the USDM motor, or another one with a similar EGR system)

[sleepermr2]

yea from what i have heard, guy would do a gen3 swap and take the head to get a hole drilled in it for an egr. i dont know how they wired it up to work though since the jdm harness obviously doesnt have a sensor for an egr. or maybe they repin it or something i dunno

[MRtuned]

Originally Posted by sleepermr2

i think what he is saying is that S/C heat up the intake air more than a turbo does. cause its constantly compressing and churning the air and making it hotter. also most S/C arent running some sort of cooling system for the intake charge.

^^ yea.

[sliverstorm]

sensor? Hmm, I thought it was all based on temprature and vacuum acting on switches/relays. I better look into this some more.

Edit: Hmm, I have seen it suggested that I use USDM intake/exhaust manifolds, because they will already have the connections. Although it might be cheaper + easier to have my own holes drilled. We'll see.

[sleepermr2]

interesting. cause the jdm intake manifold doesnt have the tvis. i guess you could just take those out. if you go jdm your probably gonna have to remove the whole head to have that hole drilled out.
thats what i meant there is a vsv that controls the egr. but its still wired into the harness. i could be wrong though. anyone else done this?
i know that chico raceworks does this. he is a vendor on this forum. might want to shoot him a pm. hes located down by vacaville IIRC

[sliverstorm]

I thought TVIS vs non-TVIS was determined by generation of the engines

[sleepermr2]

i assumed you were talking about taking a usdm gen2 intake/exhaust manifold and putting it on a gen3 motor.
if thats the case then the usdm gen2 would have tvis, the gen3 would not