Is anyone running a 3.3 upper stock lower in a vmp gen2 and what boost levels are you guys seeing , I'm running a 10:1 comp engine but because there's no e85 in my area I'm trying to get tuned for pump 93 octane right now I have a 3.2 pulley which is 15psi pulley which is to much for my set up
Vmp gen 2 boost question
- Thread starter blwnblkgt
- Start date
a .1" should drop you 1lb. Me and a Friend are currently have 2, 3.55" custom Cobra TVS pulleys built from Southern Florida Pulley Headquarters. If you need less boost you might contact Terry and see if he can make you one. I just sent him my 2.8" pulley for making a template.
We're going to have these just in case we can't find e85 and have to switch back to 91 octane with a 4lb lowers.
We're going to have these just in case we can't find e85 and have to switch back to 91 octane with a 4lb lowers.
Your saying you lost 4.5lbs of boost by adding a .1" larger pulley on a 2.3 VMP TVS blower on a Terminator? That's definitely not right. I'm sure VMP would agree.
Yea it was about 35* the one day of tuning and 60* the next.
I originally got tuned else where and hit 21.8psi on his dyno and thought his gauge was messed up so i went else where and I was having the same issue on his dyno.
I originally got tuned else where and hit 21.8psi on his dyno and thought his gauge was messed up so i went else where and I was having the same issue on his dyno.
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I agree slowing the blower down 4% doesn't drop boost 21%. Cold air can make a big difference and I'm wondering if there isn't some belt slip or something.
There was no belt slip. It held boost through the whole Rpm range and peaked boost at the very top.
Idk I was very confused with hitting that much boost on a 3" pulley. My tuner said he did see that happen on one other terminator last year with a vmp too. But he ended up running torco instead of upping pulley size
There was another thread on here that a guys tuner told him he couldn't run the 3" pulley because he would be pushing 20psi with it and he ended up using a 3.3" pulley.
Idk I was very confused with hitting that much boost on a 3" pulley. My tuner said he did see that happen on one other terminator last year with a vmp too. But he ended up running torco instead of upping pulley size
There was another thread on here that a guys tuner told him he couldn't run the 3" pulley because he would be pushing 20psi with it and he ended up using a 3.3" pulley.
My car does 21.5 psi with a 3.0" and 4lb lower.
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Just trade me your VMP for my Steggy ported and I will get you down a pound or two! Won't even charge you, straight up trade. I have e85 here too.
j/k Hope you get it figured out. One day I will have a VMP.
Thats pretty normal. My 2.3l Whipple with a 3.25 did about 15 psi.
A 3.0 should do 17-18psi
That's funny!
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