is 85mm throttle worth it ? - Page 2 - Dodge Challenger Forum: Challenger & SRT8 Forums
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post #11 of 19 (permalink) Old 05-08-2019, 09:38 AM
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You're guaranteed to see more gain than spending 1 or 2 grand on aftermarket wheels...😂😂😂. If you threw a cam in already then why not dress it up, just do it for the prospect of a better response and you won't be sorry.


I mean, slicks and lightweight wheels i feel would get you a lot further than a throttle body...lol
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post #12 of 19 (permalink) Old 05-08-2019, 11:05 AM
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Yes it is worth it. But you have to get the right one. The popular MM 87mm TB does nothing but give better throttle response. The Fastman 84mm TB will give you better throttle response AND a performance increase.

I noticed a small gain at the track with the Fastman over stock or MM. Less than a tenth, but on average my passes were faster, as well as with higher MPH.

The Fastman 84mm is actually a larger bore TB, whereas the MM is still 80mm like stock in the center. I bought a used TB off of a forum member here a while back, shipped it off to Dan at Fastman, had him work his magic, and he sent it back a couple weeks later.

If you've already got bolt ons and a cam, you would definitely pick up something. You may need to adjust your tune though after the install. Talk to your tuner about that.

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post #13 of 19 (permalink) Old 05-08-2019, 11:08 AM
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Originally Posted by trippytro View Post
I mean, slicks and lightweight wheels i feel would get you a lot further than a throttle body...lol
Sticky tires and lightweight wheels are worth a drop of 80lbs of rotational weight and probably .15 or so off your ET. My car picked up nicely at the track after swapping the Racestars on over the stock heavy 20x9's. I have about $1600 into my wheels with tires and everything. If you buy the wheels when they're on sale you can get them pretty cheap. Or find a set of used ones.
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post #14 of 19 (permalink) Old 05-08-2019, 11:16 AM Thread Starter
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Originally Posted by trippytro View Post
I mean, slicks and lightweight wheels i feel would get you a lot further than a throttle body...lol
Sticky tires and lightweight wheels are worth a drop of 80lbs of rotational weight and probably .15 or so off your ET. My car picked up nicely at the track after swapping the Racestars on over the stock heavy 20x9's. I have about $1600 into my wheels with tires and everything. If you buy the wheels when they're on sale you can get them pretty cheap. Or find a set of used ones.
is it lightweight rims 20x9? Cause im thinking to remove back seats and even the passenger seat so im planning to get 20x9 rims is good ? To lightweight
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post #15 of 19 (permalink) Old 05-08-2019, 12:00 PM
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Where can i find a tb 85mm with upgraded butterfly plate.? Can you link the direct page

https://www.a2speed.com/c-299-hemi-throttle-body.aspx


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MAGNUSON TVS 2300 12LB BLOWER WITH ARRINGTON PERFORMANCE TUNED & DROP IN PISTONS AND RODS, KOOKS LONG TUBE HEADERS
ARRINGTON FRONT STRUT TOWER BRACE
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post #16 of 19 (permalink) Old 05-08-2019, 12:45 PM
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Originally Posted by cdahl383 View Post
Yes it is worth it. But you have to get the right one. The popular MM 87mm TB does nothing but give better throttle response. The Fastman 84mm TB will give you better throttle response AND a performance increase.

I noticed a small gain at the track with the Fastman over stock or MM. Less than a tenth, but on average my passes were faster, as well as with higher MPH.

The Fastman 84mm is actually a larger bore TB, whereas the MM is still 80mm like stock in the center. I bought a used TB off of a forum member here a while back, shipped it off to Dan at Fastman, had him work his magic, and he sent it back a couple weeks later.

If you've already got bolt ons and a cam, you would definitely pick up something. You may need to adjust your tune though after the install. Talk to your tuner about that.
I have an Arrington 84mm throttle body in my car as well.

2015 Scatpack 392 M6
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274 Comp Cam with vvt limiter
Arrington 84 mm throttle body
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Black lug nuts with Hellcat center caps
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post #17 of 19 (permalink) Old 05-08-2019, 05:53 PM
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you buy new throttle from him or you sent your tb to him ?
Sent my TB to him when I was going on vacation. By the time I got home the TB was on it's way back.

2016 Challenger Scat Pack Shaker
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Tazer, BT catch can, ported intake manifold, Hemifever Tune, Fastman 84mm TB.
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post #18 of 19 (permalink) Old 05-08-2019, 06:01 PM
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Originally Posted by trippytro View Post
I mean, slicks and lightweight wheels i feel would get you a lot further than a throttle body...lol
For sure a set of DR's and lighter wheels will give a bigger return than a TB but the investment is much larger also. I see a lot of cars struggling at test and tune without Drag tires, they would have a lot more fun and go much faster with DR's.
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post #19 of 19 (permalink) Old 05-09-2019, 09:52 AM
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is it lightweight rims 20x9? Cause im thinking to remove back seats and even the passenger seat so im planning to get 20x9 rims is good ? To lightweight
Stock 20x9 wheels & tires - 60lbs each

Rear 17x9.5" Racestars and M/T drag radials - 48lbs each
Front 17x4.5" Racestars and M&H front runners - 32lbs each

Front passenger seat - 55lbs
Rear passenger seat - 45lbs
Trunk floor liner - 15lbs
Trunk tray & compressor - 10lbs
Floor mats - 7lbs

Just to give you some hard numbers.

I wouldn't go with 20" wheels if you're looking to shed some weight. I'd go down to 17-18".
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