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

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

    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
    Last edited by vr4_rider; 11-07-2010 at 01:43 AM.

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    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.
    "All religions are founded on the fear of the many and the cleverness of the few"
    - Napoleon Bonaparte.

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    Better than that "other" place Not Verified Feedback Score 2 (100%) x2xtreme360's Avatar
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    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.

    Vacuum reduction, Powdercoated misc, cruise relocate, Evo9 BOV, Custom catch cans, Russell fuel filter, SS braided fuel lines, High flow fuel loop, Autogage fuel gauge, Catless DP, DNP Y-pipe, Fuel pump hotwire.

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    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
    Last edited by vr4_rider; 11-07-2010 at 01:22 AM.

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    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
    Last edited by Patryn; 11-07-2010 at 01:27 AM.

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    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?
    Last edited by vr4_rider; 11-07-2010 at 01:43 AM.

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    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.


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    Nice intake mani indeed.


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    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.


    Quote Originally Posted by mb7050 View Post
    Nice intake mani indeed.
    "Life should NOT be a journey to the grave with the intention of arriving in an attractive and well preserved body, but rather to skid in sideways, chocolate in one hand, martini in the other, body thoroughly used up, totally worn out and screaming "WOO HOO what a ride!"

    ----------------[2007 Ride of the Year.................................. 3.5 Stroker I did. w/DBB DR1000's

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    Quote Originally Posted by oohnoo View Post
    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

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