NW 92 Fitment on FAST 102 - LS1TECH - Camaro and Firebird Forum Discussion



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NW 92 Fitment on FAST 102

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Old 03-13-2017, 03:51 PM   #1
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Default NW 92 Fitment on FAST 102

Can anyone confirm that a NW 92mm TB will work with a FAST 102? I have heard mixed things about this and I'm ready to buy. My tuner is recommending I go with the NW 92 tb for my build.
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Old 03-13-2017, 06:10 PM   #2
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Anyone?
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Old 03-13-2017, 07:27 PM   #3
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No a NW 92 will not fit. The bottom of the tb is too short and will not deal to the tb opening.

If you get a NW get a 102 if your tuner says he can't tune it get a different tuner. They're really not all that bad. Don't get a fast tb or a knockoff
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Old 03-13-2017, 07:34 PM   #4
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I do not know why it would not, I am using a factory
90 MM TB with my FAST 102. I would strongly encourage
Getting a V Max velocity ring which eliminates the step
From 92 to 102 right behind the TB at the entrance to
The plenum. This will make it MUCH EASIER
To tune especially the transition from idle to light/part
Throttle making it much more driveable at low speeds.
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Old 03-13-2017, 07:55 PM   #5
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Does Warr make a 102TB? They get pretty good reviews here.
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Old 03-14-2017, 01:23 AM   #6
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That's a shame about the NW 92. Well I'm either going to go with a FAST 92 or a NW 102 now. I'm curious why he is against the 102?
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Old 03-14-2017, 05:50 AM   #7
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My WARR 92mm TB mounted to my 102 LSXRT very nice would be even better with the adapter mentioned above.


Quote:
Originally Posted by wannafbody View Post
Does Warr make a 102TB? They get pretty good reviews here.
Yes WARR makes a 102 TB. Let's than half the cost of the big name TB's. Will need to have the idle & to sensors mounted.
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Old 03-14-2017, 01:18 PM   #8
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What's the theory behind using a 92mm TB on a 102mm intake?
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Old 03-14-2017, 01:33 PM   #9
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The 92 is just supposed to be easier to tune and more DD friendly from what I hear. I have heard some say that the 102 TB will lose some power in the low to midrange but I don't know how true that is.

So the ​​​​​Warr 92 fits. Does anyone know of any other 92mm TBs that work with no issues?
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Old 03-14-2017, 02:31 PM   #10
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Default Cbm adapter

Well I think this would work for the NW 92.

http://store.custombuiltmotors.com/engine-external/cbm-motorsports-92mm-to-102mm-ls-throttle-body-adapter.html

But between that and the Vmax ring it ends up costing more than the 102. I think I'm going to go with the NW 102.

Last edited by JTtransAM; 03-14-2017 at 02:56 PM.
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Old 03-14-2017, 02:48 PM   #11
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V Max Ring was ~$50.00 when I bought mine.
90 MM TB will cost me about ~8 -10 FWHP on my
690 FWHP Engine, but be much easier to tune and
drive part throttle, idle to ~2500 RPM. Loss of power
depends on starting point 600 might be ~6,
500-550 probably 0-4.
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Old 03-14-2017, 05:02 PM   #12
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For anyone doubting my original comment...

https://ls1tech.com/forums/generatio...-manifold.html

I can also say with confidence that on a cam only ls6 I switched a fast 92 to out for a 102 on my fast 102 and gained 6whp on the same dyno. I did not have the vmax ring on the 92 but after my results I never would even bother with a 92 on a fast 102

Op get the nw102 if your tuner is any good he won't have an issue. Then either go sd or a 100mm maf
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Old 03-14-2017, 05:21 PM   #13
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Quote:
Originally Posted by redbird555 View Post
For anyone doubting my original comment...

https://ls1tech.com/forums/generatio...-manifold.html

I can also say with confidence that on a cam only ls6 I switched a fast 92 to out for a 102 on my fast 102 and gained 6whp on the same dyno. I did not have the vmax ring on the 92 but after my results I never would even bother with a 92 on a fast 102

Op get the nw102 if your tuner is any good he won't have an issue. Then either go sd or a 100mm maf
I stand corrected redbird, I did not know there were fitment
differences between, Warr,FAST, & NW 92 MM TBs.
Thank You.
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Old 03-14-2017, 09:23 PM   #14
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I wouldn't even consider a 92mm on a 102. Get a tuner that can do the job.
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Old 03-15-2017, 03:23 AM   #15
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Thanks for all of the input guys. I think I'll be ordering a NW 102 soon. My tuner never said that he couldn't tune the 102, he just suggested for my application that I might like the 92 better for a DD. He said to go with whichever one I prefer in the end, but highly suggested a NW regardless of the size.
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