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1Gen-TundraGeneral discussion forum for the 2000 to 2006 Toyota Tundra.
This is a discussion thread titled "Underdrive pulley?", within the 1Gen-Tundra forum, part of the Truck Forums category.
I was wondering what the advantage of an underdrive pulley is on the Tundras? My friend just put one on his 07' supercharged Rover and says it gave him a pretty big hp gain, is this also the case with the Tundra?
yes it will give you a Hp gain, BUT it will also have some negitive affects. such as loss of alternator power. if you have a audio system with amps, high output extra fog light driving lights, extra accessories. it could drain your battery.
i also thought of this but since i have all of the above and than some, it wasn't worth the chance of braking down on the road.
yes you should read up on the thread's and posts on this subject.
it might enlighten you on the subject.
it surely will help you understand. under dog racing has such a product. look them up.
if you don't have any accessories than this will help with some power. but i gained 55 more HP my adding a few mod's, volant cai, jba headers, cat back magnaflow exhaust, no resinator, with dual tail pipes out the back, and the UNICHIP mapped for all these mod's.
also some claim smaller rim's and tires will also help with power too.
but all in all if you want power, supercharge or turbo charge it. and your gain's will far exceed what i have done by double.
but the issue will be will the engine, tranny and rear end hold up to the power , for a long time. most likely not, if you use the power more than you should.
hope it helps , let me know if i can assist you further. i will try my best.
thats why i remain a member here!
gorilla
from people here, they are worth the money according to their reviews. The only bad thing that has been noticed is a very light dimming of your lights which nobody has mentioned as a big factor since the dimming is only during idle.
__________________ 2006 Chevy Silverado 4wd 5.3 4.10 gears - Dual flowmaster 40's out back exiting at the sides
- Blackbear 87 octane tune (good for 25hp and its amazing, no more torque management)
- LT headers 14.41 @98mph
A REAL truck.
dimming of the light's means the alternator isn't putting out enough.
just as i said, so if you are in traffic alot, or at many traffic light's thoughout the day, it could cause you to have a brake down, by draining your battery. and like i said if you have a serious audio system, and extra lighting fog/driving light's air horns, etc . any extra accessory's, that are running , your alt. will not put out enough. you will end up in discharge mode.
gorilla
i run over 1800rms, besides many other accessory's, thats why i wouldn't do it. my system means more.
thats why i added the sequaia's 150amp alternator to my tundra. which gave me a extra 20 amps. and 20 amps is better than stock 130amp. now i have a 150amp alt. to help run my system , plus a kinetic 1800 battery plus a 1.5 capasitor, etc etc etc...
Last edited by GORILLA; 05-30-2008 at 10:15 PM.
Reason: adding
__________________
'07 RCSB 5.7L SR5 Silver Sky Metallic (The Silver Bullet) Yep....it's gotta HEMI
Never argue with an idiot. They will bring you down to their level and beat you with experience!
I have had my pulley for a while (not sure exactly how long but probably somewhere around 2 years), and I have Never had an issue with draining the battery, overheating issues or anything. I don't see why people stress so hard about their lights dimming at idle, its not a big deal. I have ran 3 amps at one time to a stock batter, stock alternator, and with the underdrive pulley and never had issues.
It has never thrown a code, or broke down or left me stranded, EVER. Its not going to happen.
Its one of only a few engine mods that i actually recommend.
.... all the stuff that is being said in this thread has been said before.
I, for one, didn't see the other thread and find this information interesting and possibly useful. Just because you've seen it before, doesn't mean everyone has.
I, for one, didn't see the other thread and find this information interesting and possibly useful. Just because you've seen it before, doesn't mean everyone has.
Underdrive pulley?
Linear Mode
