90mm TB mod--Thread for those wanting to do it

[vr4_rider]

Hey, guys. I'm very new to this idea, but would like to perform this mod.

I would like this thread to be an informational one with the purpose to help those who are interested in the 90mm throttle body.

If you have perform this mod, or know how to, please post up.

I'll start the questions

1) What throttle bodies will work?
2) Can we use the stock plenum?
3) Who makes adapters?

Here's what I found on ebay:

http://cgi.ebay.com/ebaymotors/Q45-T...Q5fAccessories

http://cgi.ebay.com/ebaymotors/DNA-8...Q5fAccessories

Here's one for a 3000GT/Stealth:

http://cgi.ebay.com/ebaymotors/90-99...Q5fAccessories

Thanks,
TP

[Gene]

WHY do you need a 90mm tb?
are you planning on making over 1100 awhp?
you realise its going to make driveability total shit right?
tuning it is gonna be a pain in the butt too.

[x2xtreme360]

Zero reason to upgrade from the stock 60mm one. It's one of those pointless kind of mods... as it wont do you any good.

[vr4_rider]

Oh..lol. Ignore this thread then..haha. I had no idea it was pretty much useless for the general population.

But the 90mm is really a 82mm ID, so I don't know if the "over 1100 awhp" comment was for the 90mm ID or OD.

As to why, I thought upgrading would make things flow better. My IC piping is 3" and the stock tb is 2.44" (62mm).

The reason why I mentioned 90mm was because that is what's common with TB upgrades.

So for 600awhp-700awhp, what's a good upgrade TB, if any?

Would the AEM EMS 2 take care of the shitty drivability? and would tuning be an issue with the AEM EMS 2?

Thanks,
TP

[Patryn]

CX racing has that billet one that is selling on Ebay and PMP also sells them. I has "bling" factor to it, gets rid of the water lines, and is 3 inch in diameter to mate well with most FMIC piping which is 3 inches anyway.

http://cgi.ebay.com/ebaymotors/90-99...Q5fAccessories

[vr4_rider]

Here are the links for the billet tb:

http://www.pricematchedparts.com/pro...y-3850-20.html

http://cgi.ebay.com/ebaymotors/90-99...Q5fAccessories

I take it the q45 TB won't work with a STOCK plenum?

[oohnoo]

I have that CXRacing one but haven't had the chance to install it yet. It looks to be a nice TB as it uses both the oem TPS and ISC/IAC which retain the water lines for the ISC to work properly. Look at the pic that shows the bottom where it has two plugs, you have to remove those and install fittings which are not supplied. Also this will not bolt up to the stock plenum as the bottom portion of it hits the rear valve cover, maybe if you used one of the plenum spacers.
I'm going to be using a aftermarket plenum from PNTPerformance which is already bored out for 75mm. Lots of good features with this plenum.

[mb7050]

Nice intake mani indeed.

[oohnoo]

Ya but it took alot of work to get it to fit properly. The mounting flange was warped to shit so I had to set it up on the miller and take off about .035" to get it flat. I'm also hoping it's going to clear the Tial wastegate on my DR setup.

Nice intake mani indeed.

[vr4_rider]

I have that CXRacing one but haven't had the chance to install it yet. It looks to be a nice TB as it uses both the oem TPS and ISC/IAC which retain the water lines for the ISC to work properly. Look at the pic that shows the bottom where it has two plugs, you have to remove those and install fittings which are not supplied. Also this will not bolt up to the stock plenum as the bottom portion of it hits the rear valve cover, maybe if you used one of the plenum spacers.
I'm going to be using a aftermarket plenum from PNTPerformance which is already bored out for 75mm. Lots of good features with this plenum.

Hey, Bob. IF one were running an AEM EMS 2, what features of the TB can you get rid of? What about the water lines running to the TB?

The CXracing won't work with a stock plenum? How do you know?

Thanks,
TP