How much boost pressure can a built VQ37VHR withstand?

TopgunZ

You could go to the 6766 but I still think that you will be happy with the amount of boost and near zero lag from the 6266. Throwing a huge turbo on a low compression engine isn't going to be very fun on the streets. That's why I am building mine with 11:1 cr but I am on E85. I don't see a reason you would need more than 21 lbs anyway. Unless time slips are your number one goal.

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TopgunZ

Also, I am tuning at 5,500 ft which does affect the turbo spool. So if I was at sea level that 21 could have been closer to 25.

Here is a quick write up on this.

Boost and High Elevation question.

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BBRSpeedWorks

The twin setup I'm building next well be what enends up on my car someday..I think the 6266 should be more than enough...I think if I can get high 6 to low 700 the z will be point less so that what I'm shooting for...lol...but my number one goal is busting *** on high dollar cars its what I love idk y but I love to say I have less 30k in my car and I just walked you. ..plus the z will never do what my talon will do on the strip so I'm not going to try...I like to slide....

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TopgunZ

I cant wait to see how this project turns out!
Please log your boost curve upon completion of dyno. I mean, that is after all the number 1 reason to make it twins vs. single right?

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BBRSpeedWorks

I have tons and tons of info on all the work I do...but I will for sure....as far as traction goes I was putting down 500 whp and didn't have a problem with traction out side of first and tires warm..and that's on stock 2014 rays

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TerribleONE

Surprised to hear this. My car has trouble putting down the power even in 2nd. Running 305 PSS's and whiteline diff bushings.

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Chuck33079

Mine will get sloppy as hell in 2nd, and I'm probably only putting down ~480whp or so.

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TopgunZ

I always wonder whats really going on with traction. I have around 500 and I spin through 1st but hook up pretty hard in 2nd, in summer.

And 10 lbs on E85 with 16* timing is plenty to put me in the range of "I should be losing traction".

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