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Discussing Underdrive pulley in the 4.0L 2005+ Forum. Hey guys, just ordered my ASP UDP. Hopefully I will notice something lol. I already ...

       

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Old June 14th, 2009, 05:18 AM   #1
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Underdrive pulley


Hey guys, just ordered my ASP UDP. Hopefully I will notice something lol. I already have the JLT CAI/Tuner Combo. I guess I will see something like 240 at the engine and maybe around 210 at the wheels. Not really sure.

I have a question. Is the BBK 70mm TB and the TB spacer worth it? Would I notice a difference if I got both?
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Old June 14th, 2009, 05:29 AM   #2
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Originally Posted by 06dkkiser View Post
Hey guys, just ordered my ASP UDP. Hopefully I will notice something lol. I already have the JLT CAI/Tuner Combo. I guess I will see something like 240 at the engine and maybe around 210 at the wheels. Not really sure.

I have a question. Is the BBK 70mm TB and the TB spacer worth it? Would I notice a difference if I got both?
You will notice better throttle response, but i would say dont waste your money on that. Upgrading your TB is kindof pointless until you are making more power that requires it.
I'd say save the money and get gears if you havn't already
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Old June 14th, 2009, 05:40 AM   #3
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yeah end of summer is definately gt rear axle with 3.73s and exhaust, but I was just wondering about the TB and spacer thing. Some people say it isnt worth it and some people absolutely love it and swear by it. I know I would notice a bigger gain because of the CAI and tune. Thanks for the the advice. Maybe some more people will tune in.

Also did I gain or lose any low end torque with the CAI and tune. Same question for the 70mm TB. Will I notice any low end torque change?
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Old June 25th, 2009, 01:47 AM   #4
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Spacer is a waste of money, like Safi said you're better off waiting until you have the HP to make full use of an upgraded TB.

I'd say prio#1 should be an upgraded rear end.

But if you feel the need just grab a TB, skip the spacer until you have money to waste.
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Old June 26th, 2009, 05:44 PM   #5
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by far the best bang for my buck on my 95 5.0L and my 95 3.8L was a set of gears 3.73 on the 5.0 and 4.10 on the 3.8 ... now the tb is not a complete waste just not as satisfying as the gears ... i have a 4.0 now and i've been looking for a set of udp online but have had no luck finding anything ... where'd u get your asp udp ... im currrently saving up for the gears and a t-lok on this car and a pypes m80 mid muffler dual exhaust
 
Old June 29th, 2009, 02:53 AM   #6
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Steeda Underdrive Pulley 2005+ Mustang V6 - 018-526400
Mustang ASP Underdrive Pulleys & Belt Package
Just google man. I could pull up like 10 more sites. I got mine from late model restoration.
Also make sure you either order one with the belt in a package or order the pully and go to autozone and pick up the right size belt. Alot of places only sell the pulley.
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Old July 15th, 2009, 02:39 AM   #7
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how did the UDP turn out? im thinking of getting that next
 
Old July 19th, 2009, 04:38 AM   #8
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good man. cant really notice anything bad about it. accessories work great. nice gain.
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Old July 19th, 2009, 05:18 AM   #9
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Dont fuck with aftermarket throttle bodies.

Nothing but trouble.
 
Old July 19th, 2009, 06:36 PM   #10
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Why? Your statement is useless without an explanation.
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- CAI/Tuner Combo/ 93 Octane Tune/ Coast Alum DS/ ASP 25% UDP/ Custom H with A/T Flows/ Pioneer Avic D3/ Dual Beam 8000k HID Headlights
 
Old October 28th, 2009, 03:25 PM   #11
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i have the bbk 70mm on my 07 and it was easy to install with a nice little difference. it does whistle at certain rpm.
 
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