Upgrading pulleys question
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Joined: 05-08-12
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From: Millersville, PA
Upgrading pulleys question
So as of right now I have a full Borla exhaust with open cats(stock headers) and an Injen Cai intake. I'm looking at upgrading my pulleys and going with a tune from Trifecta. I was wondering what size pulleys will make the most power and produce the most boost, and will I need to purchase bigger injectors? Thanks, Cory.
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Joined: 04-18-07
Posts: 238
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From: Stow, OH
Smallest pulley you can find will make the most boost/power!
Seriously though its not nearly that easy of a answer, and has already been asked and answered many many times. The search button is your friend...set aside a couple days and get to reading
Seriously though its not nearly that easy of a answer, and has already been asked and answered many many times. The search button is your friend...set aside a couple days and get to reading
To drop the pulley you'll need to up the injectors. Cooling mods also comes into play too.
Look at zzps or ottps stage kits, best bang for your buck. Can always have a better tune done later on.
And search. This topics been beat to death.
Look at zzps or ottps stage kits, best bang for your buck. Can always have a better tune done later on.
And search. This topics been beat to death.
if your running no surporting cooling mods i say run a 3.0 or 2.9. you will need atleast 42LB injectors
with a 2.9 you will see around 17LBs of boost at max rpm(depending on sea level, backpressure... larger or more free flowing exhausts usually mean less boost but doesnt always mean less hp or trq)
if you have some surporting cooling mods such as
dual pass/ single pass
front mount heatexchanger or griffing or zzp stealth Heat exchangers
*****phenolic intake manifold spacer***** best cooling mod for your buck (A MUST FOR LSJ)
either option B bleeder kit or a expansion flow-thru tank.
you can run a smaller pulley such as 2.8 or 2.7.
about every point### (2.#) you drop you gain 1 lb of boost.
most people run 2.8 pulleys. i see 18-19lbs on my 2.8 at 7krpms.
but eventually the eaton m62 supercharger will loose efficiency and just create alot of heat soak
Also having your supercharger ported and polished also helps keep your IAT2s low during hard pulls. and make your m62 more efficent.
mosty ppl who run 2.7's or lower usually are meth-water injected and tuned for the meth. the meth greatly keeps down your IAT2's (Intake Air Temp2) aka your 1st oxygen sensor. if you run a small pulley with no meth injection your just creating lots of heat.
also a smart investment is a Aeroforce scan gauge. which reads lots of sensors in your car, reads CELs, clears CELs. i mainly use mine to watch my IAT1 and iat2's and occasionally ill watch my knock sensor. it allows you to watch 2 parameters at once
And the cobalt LSJ intercooling pumps are KNOWN to fail. so your aerforce if your best way of monitoring that its working. if its not working then your IAT2s will sky rocket.
* When i got my car tuned at BackYardTurbo he noticed my IAT2s wouldnt drop below 150... asked me if my pump was working.... so i smacked it with a breaker bar to knock it back into action. IAT2s drops instantly. car felt so much stronger... the entire time i owned my car b4 i had it tuned my intercooling pump wasnt even working. I replaced it with a brand new bosch pump. *
i also got my car tuned to have the intercooling pump to turn on with my key just on accessories with HPtuners. and if my cars coolant hits 200. my fan is tuned to kick on so my coolant wont go above 200.
i would suggest doing lots of reading and research before making any purchases or investments. Goodluck with the modding
Stick with ZZP or Powell Raceparts or OTTP or Turbotechracing. i would suggest a custom tune. email - canned tunes are just to get your car running. IMO every car is different and should get custom tuned. ive only had bad experience with email and canned tunes. others may say otherwise... but to each his own
with a 2.9 you will see around 17LBs of boost at max rpm(depending on sea level, backpressure... larger or more free flowing exhausts usually mean less boost but doesnt always mean less hp or trq)
if you have some surporting cooling mods such as
dual pass/ single pass
front mount heatexchanger or griffing or zzp stealth Heat exchangers
*****phenolic intake manifold spacer***** best cooling mod for your buck (A MUST FOR LSJ)
either option B bleeder kit or a expansion flow-thru tank.
you can run a smaller pulley such as 2.8 or 2.7.
about every point### (2.#) you drop you gain 1 lb of boost.
most people run 2.8 pulleys. i see 18-19lbs on my 2.8 at 7krpms.
but eventually the eaton m62 supercharger will loose efficiency and just create alot of heat soak
Also having your supercharger ported and polished also helps keep your IAT2s low during hard pulls. and make your m62 more efficent.
mosty ppl who run 2.7's or lower usually are meth-water injected and tuned for the meth. the meth greatly keeps down your IAT2's (Intake Air Temp2) aka your 1st oxygen sensor. if you run a small pulley with no meth injection your just creating lots of heat.
also a smart investment is a Aeroforce scan gauge. which reads lots of sensors in your car, reads CELs, clears CELs. i mainly use mine to watch my IAT1 and iat2's and occasionally ill watch my knock sensor. it allows you to watch 2 parameters at once
And the cobalt LSJ intercooling pumps are KNOWN to fail. so your aerforce if your best way of monitoring that its working. if its not working then your IAT2s will sky rocket.
* When i got my car tuned at BackYardTurbo he noticed my IAT2s wouldnt drop below 150... asked me if my pump was working.... so i smacked it with a breaker bar to knock it back into action. IAT2s drops instantly. car felt so much stronger... the entire time i owned my car b4 i had it tuned my intercooling pump wasnt even working. I replaced it with a brand new bosch pump. *
i also got my car tuned to have the intercooling pump to turn on with my key just on accessories with HPtuners. and if my cars coolant hits 200. my fan is tuned to kick on so my coolant wont go above 200.
i would suggest doing lots of reading and research before making any purchases or investments. Goodluck with the modding
Stick with ZZP or Powell Raceparts or OTTP or Turbotechracing. i would suggest a custom tune. email - canned tunes are just to get your car running. IMO every car is different and should get custom tuned. ive only had bad experience with email and canned tunes. others may say otherwise... but to each his own
Last edited by sternerG85SC; Jan 22, 2013 at 07:48 AM. Reason: i forgot blah blah boobies yay!
Joined: 12-30-07
Posts: 14,079
Likes: 197
From: NEPA
More boost on a blower car, does not always mean more power.
Boost is a measure of restriction.
U can have a 20psi SS/SC that makes less power than an 18psi SS/SC.
Also, if you do not have the proper supporting mods, a smaller pulley will not create more power than a larger pulley.
I do agree that this question has been asked 100's of times. OP, please take a look around the site for a few days. I'm sure u will find your answer.
Last edited by Staged07SS; Jan 22, 2013 at 01:50 PM.
if your running no surporting cooling mods i say run a 3.0 or 2.9. you will need atleast 42LB injectors
with a 2.9 you will see around 17LBs of boost at max rpm(depending on sea level, backpressure... larger or more free flowing exhausts usually mean less boost but doesnt always mean less hp or trq)
if you have some surporting cooling mods such as
dual pass/ single pass
front mount heatexchanger or griffing or zzp stealth Heat exchangers
*****phenolic intake manifold spacer***** best cooling mod for your buck (A MUST FOR LSJ)
either option B bleeder kit or a expansion flow-thru tank.
you can run a smaller pulley such as 2.8 or 2.7.
about every point### (2.#) you drop you gain 1 lb of boost.
most people run 2.8 pulleys. i see 18-19lbs on my 2.8 at 7krpms.
but eventually the eaton m62 supercharger will loose efficiency and just create alot of heat soak
Also having your supercharger ported and polished also helps keep your IAT2s low during hard pulls. and make your m62 more efficent.
mosty ppl who run 2.7's or lower usually are meth-water injected and tuned for the meth. the meth greatly keeps down your IAT2's (Intake Air Temp2) aka your 1st oxygen sensor. if you run a small pulley with no meth injection your just creating lots of heat.
also a smart investment is a Aeroforce scan gauge. which reads lots of sensors in your car, reads CELs, clears CELs. i mainly use mine to watch my IAT1 and iat2's and occasionally ill watch my knock sensor. it allows you to watch 2 parameters at once
And the cobalt LSJ intercooling pumps are KNOWN to fail. so your aerforce if your best way of monitoring that its working. if its not working then your IAT2s will sky rocket.
* When i got my car tuned at BackYardTurbo he noticed my IAT2s wouldnt drop below 150... asked me if my pump was working.... so i smacked it with a breaker bar to knock it back into action. IAT2s drops instantly. car felt so much stronger... the entire time i owned my car b4 i had it tuned my intercooling pump wasnt even working. I replaced it with a brand new bosch pump. *
i also got my car tuned to have the intercooling pump to turn on with my key just on accessories with HPtuners. and if my cars coolant hits 200. my fan is tuned to kick on so my coolant wont go above 200.
i would suggest doing lots of reading and research before making any purchases or investments. Goodluck with the modding Stick with ZZP or Powell Raceparts or OTTP or Turbotechracing. i would suggest a custom tune. email - canned tunes are just to get your car running. IMO every car is different and should get custom tuned. ive only had bad experience with email and canned tunes. others may say otherwise... but to each his own
with a 2.9 you will see around 17LBs of boost at max rpm(depending on sea level, backpressure... larger or more free flowing exhausts usually mean less boost but doesnt always mean less hp or trq)
if you have some surporting cooling mods such as
dual pass/ single pass
front mount heatexchanger or griffing or zzp stealth Heat exchangers
*****phenolic intake manifold spacer***** best cooling mod for your buck (A MUST FOR LSJ)
either option B bleeder kit or a expansion flow-thru tank.
you can run a smaller pulley such as 2.8 or 2.7.
about every point### (2.#) you drop you gain 1 lb of boost.
most people run 2.8 pulleys. i see 18-19lbs on my 2.8 at 7krpms.
but eventually the eaton m62 supercharger will loose efficiency and just create alot of heat soak
Also having your supercharger ported and polished also helps keep your IAT2s low during hard pulls. and make your m62 more efficent.
mosty ppl who run 2.7's or lower usually are meth-water injected and tuned for the meth. the meth greatly keeps down your IAT2's (Intake Air Temp2) aka your 1st oxygen sensor. if you run a small pulley with no meth injection your just creating lots of heat.
also a smart investment is a Aeroforce scan gauge. which reads lots of sensors in your car, reads CELs, clears CELs. i mainly use mine to watch my IAT1 and iat2's and occasionally ill watch my knock sensor. it allows you to watch 2 parameters at once
And the cobalt LSJ intercooling pumps are KNOWN to fail. so your aerforce if your best way of monitoring that its working. if its not working then your IAT2s will sky rocket.
* When i got my car tuned at BackYardTurbo he noticed my IAT2s wouldnt drop below 150... asked me if my pump was working.... so i smacked it with a breaker bar to knock it back into action. IAT2s drops instantly. car felt so much stronger... the entire time i owned my car b4 i had it tuned my intercooling pump wasnt even working. I replaced it with a brand new bosch pump. *
i also got my car tuned to have the intercooling pump to turn on with my key just on accessories with HPtuners. and if my cars coolant hits 200. my fan is tuned to kick on so my coolant wont go above 200.
i would suggest doing lots of reading and research before making any purchases or investments. Goodluck with the modding
Stick with ZZP or Powell Raceparts or OTTP or Turbotechracing. i would suggest a custom tune. email - canned tunes are just to get your car running. IMO every car is different and should get custom tuned. ive only had bad experience with email and canned tunes. others may say otherwise... but to each his ownyou need to heed your own advice and read and learn
op the search button is your friend read learn then ask
GDS
Thread Starter
New Member
Joined: 05-08-12
Posts: 72
Likes: 0
From: Millersville, PA
I'm looking into a 2.6"-2.8" pulley along with a tune from trifecta or a custom tune. But I will deff do some reading and see what most people prefer. I also found an S20G turbo kit that fits the 05-07 SS/SC that I've been looking into.
the upstream 02 sensor has nothing to do with iat temps and the intercooler system on these cars do not heat soak and cooling mods are for recovery nothing more and not needed to drop pulley sizes
you need to heed your own advice and read and learn
op the search button is your friend read learn then ask
GDS
you need to heed your own advice and read and learn
op the search button is your friend read learn then ask
GDS
Thread Starter
New Member
Joined: 05-08-12
Posts: 72
Likes: 0
From: Millersville, PA
Yes if you are on pump gas you will need at least 50# injectors to run a 2.8, to Run E85 you will need 80# injectors. And yes with a 2.8 pulley you will need to get a smaller belt or oversized tensioner pulley
prove u wrong? hmm let see went I bought my car in mid summer 2010 I didnt know anything about the car but I did noticed that after the car had warmed up to full temps and doing a few pulls it would lose alot of its power up top aka didnt pull as hard as the first few pulls. I just assumed this was me being crazy then I discovered that these cars have ic pumps that are prone to dying after after 40 or 50k miles my card had 59k when I got it, so I read up on how to check the pump and sure enough the pump was dead allowing my car to heat soak after a few pulls, I replaced it and since then my car has not had a problem with losing power up top. Consider yourself proven wrong and have a great day.
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