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Whipple 2.3l 140ax Upgrade - Max Boost on Stock LQ9?

sueprcharger whipple 140ax boost

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#1 psualumni

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Posted 02 May 2017 - 09:49 PM

Recently placed my order for a Whipple 2.3l 140ax from Stillen Performance and I can't wait for it to get here! I have been wanting to install a supercharger since I bought my truck and have been saving since I bought it to do the same. I attempted to do my homework on choosing a supercharger setup for my SSS and decided on Whipple. Seems like it all comes down to what you want to spend on a setup and what brand/type of supercharger your prefer for your build.

 

I am curious as to how much boost my stock LQ9 will SAFELY take. The 140ax comes with a 3.625in pulley that is rated for 6-8lbs of boost. I have a high-flow exhaust (long tube headers,  no cats, Billy Boat exhaust) so I know that will factor into losing 1-2lbs of boost off the top. From those who have supercharged the stock LQ9 before me, what is my max target boost before I run into driveability issues? Thanks in advance as I am looking to add a smaller pulley at the time of install since I am tuning via BlackBear Autocal.


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#2 psualumni

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Posted 13 May 2017 - 03:44 PM

No suggestions on how much boost is too much? I've read on other forums guys running the 140ax on stock 5.0 Mustangs to 15lbs max on pump premium.

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#3 Johnnyblaze370

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Posted 14 May 2017 - 07:57 PM

I broke a ring land at 6lbs. 


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#4 psualumni

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Posted 14 May 2017 - 08:57 PM

Thanks

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#5 cleansss20

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Posted 16 May 2017 - 01:15 PM

It all depends on tune. There are guys on here pushing 20# and are running fine and some like me who threw a rod out the side of the block at 8#. Depending on your boost levels you might have to do a SD tune instead of MAF sensor. I'm still waiting to get mine tuned again but I added meth injection this time as a little more insurance.


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#6 psualumni

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Posted 16 May 2017 - 06:00 PM

I'm tuning with Black Bear via EFI AutoCal. I told Jason I wanted to go with the the 140ax setup and a 3.00 pulley. I thinking this should put down 11-13 lbs and make great power safely when tuned right.

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