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Old 12-01-2010, 09:08 PM   #1
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TechnoTorque or Underdrive Pulley

Trying to decide which to do for my next mod,

both are roughly the same price, any thoughts?

thanks
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Old 12-02-2010, 04:53 AM   #2
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Both of course!

I just got the RSS UD pulley, next will be the TT. Also depends on your car but the pulley will give you more I think.
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Old 12-02-2010, 06:36 AM   #3
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What are your thoughts on the pulley? worth it or not?
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Old 12-02-2010, 07:24 AM   #4
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Quote:
Originally Posted by dsisco
Trying to decide which to do for my next mod,

both are roughly the same price, any thoughts?

thanks
My vehicle is equipped with both of them, and I am very pleased with their performance . However, you'll find that there are highly polarized views on this site regarding the effectiveness of Techno Torque . Personally, I feel that there is merit to Pedro's design given the proper application. As far as the light weight under drive pulley is concerned, most will agree that its one of the best "bang for buck"mods one can perform on their boxster. Moreover, there's ample data on this site and others to suggest real gains in hp .
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Old 12-02-2010, 08:30 AM   #5
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I just installed the pulley a few weeks ago. It is awesome! I highly recommend it. As far as the TT, I'm waiting on the 75mm throttle body and ipd plenum to be realeased for 986 in about a month.

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Old 12-02-2010, 09:58 AM   #6
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Wait what?!

IPD plenum and 75mm throttle body?? For our cars? That will be interesting to say the least. It seems this setup works very well on Caymans etc.

Too bad this will be like what, $ 1,000??
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Old 12-02-2010, 10:22 AM   #7
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Found this link


http://www.speedmerchants.com/products/ipd-intake-plenum-986-boxster


I will start saving some $$$!
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Old 12-02-2010, 11:16 AM   #8
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Quote:
Originally Posted by AndyA6
Wait what?!

IPD plenum and 75mm throttle body?? For our cars? That will be interesting to say the least. It seems this setup works very well on Caymans etc.

Too bad this will be like what, $ 1,000??

Word on the streets is 1000-1200 for a package deal. I can't wait!! My car will be pretty much maxed out without you know: a bigger motor

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Old 12-02-2010, 11:34 AM   #9
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I've got a 75mm TB with a stock 996 intake "T" on my 3.2. It opened up the mid range very nicely. Don't ask for dyno sheets - that's coming in the spring.
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Old 12-02-2010, 12:30 PM   #10
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Underdrive Pulley.
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Old 12-02-2010, 03:42 PM   #11
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+1 on what JAAY said........
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Old 12-02-2010, 05:00 PM   #12
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Thanks guys for the feedback,

My water pump has just blown so looks like ill be doing the pulley while im in there.

will order from Tarret engineering or flat 6,

any reccomendations? or are they all pretty much the same?

will let you know how it goes

thanks
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Old 12-03-2010, 04:53 PM   #13
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Quote:
Originally Posted by dsisco
Trying to decide which to do for my next mod,

both are roughly the same price, any thoughts?

thanks

I've asked the same question on other forums and have not gotten an answer.

I think there are 4 UD pulleys that are out there:

RSS
Mantis
Flat 6
BBI

Again, any difference between these four?

Thanks
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Old 12-03-2010, 05:39 PM   #14
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Quote:
Originally Posted by dsisco
Thanks guys for the feedback,

My water pump has just blown so looks like ill be doing the pulley while im in there.

will order from Tarret engineering or flat 6,

any reccomendations? or are they all pretty much the same?

will let you know how it goes

thanks

I installed the BBI on my vehicle about a year ago . At the time, it was considered the lightest and best designed pulley of the lot. However, Jake at Flat 6 has since come out with his own which I'm sure is excellent also.
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Old 12-09-2010, 08:30 PM   #15
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ended up going with the newest design from BB1 from tarrett engineering,

will be installing over the weekend along with my engine mount, water pump and LN thermostat,

will let you know how it goes.

ps. is there any gains to be had from removing the cats on a 2.5?

thanks
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Old 12-09-2010, 08:57 PM   #16
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8hp. and a check engine.. Fabspeed makes some sweet bypass pipes.. That is what I am running.
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Old 12-10-2010, 08:09 PM   #17
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"ended up going with the newest design from BB1 from tarrett engineering"


Are you changing to a shorter belt as well, or were you going to see if the oem belt works? Any trouble with grinding down the boss that apparently is in the way?

Be nice to see some pics!

Mark
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Old 12-11-2010, 10:34 PM   #18
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Quote:
Originally Posted by JAAY
8hp. and a check engine.. Fabspeed makes some sweet bypass pipes.. That is what I am running.
how do you get rid of the check engine light?
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Old 12-12-2010, 05:19 AM   #19
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Quote:
Originally Posted by dsisco
how do you get rid of the check engine light?
To clear the CEL, you would have to reprogram the ecu in order for it to disregard the fact that the cats have been deleted. In my experience, going "catless" resulted in a significant loss of low end and mid range torque. Since the 2.5 engine only has one set of cats, you would be better off upgrading to a set of high quality lower cell units. This, however, can be an expen$$$$ive .
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Last edited by Johnny Danger; 12-28-2010 at 09:24 AM.
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Old 12-12-2010, 06:51 AM   #20
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Probably true on the 2.5. I have a 3.4 so in my case it is different.
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