I would like to see the Summit turbo compared to Twin GT45 clones. I'm interested to see what going twins does to boost lag and torque. 2 x $169 = $338 which is still around half the price of the S475. Factoring in the extra cost of plumbing a second turbo might make this a better comparison money-wise.

Enjoying the videos Richard. It’s important work and consumer evidence you’re providing.

I Appreciate all your hard work. The fast lane to horsepower taking out the guess work..You rock DZ 302 was my first drag Motor in a drag jeep.

i would love to see a turbo video on different size AR housings on the same compressor size and see how the different backpressures affect the boost rate. pleeeeeeease.

I personally find your vast knowledge invaluable Richard and learned more with your videos than any other on utube hands down. Thank you 1000%

This is by far the best turbocharger video I have seen. Very informative and well presented. 👍👍

Thanks for posting these Richard!

I’m still learning and your videos are awesome and informative! I’d like to see single vs twin turbo setups and more specific 2 gt45 vs a bigger/more expensive single setup and pros/cons of each example

You put 45min worth of info in a

Great stuff Richard!!! Thank you for all the information you give us!

happiness is.... a new richard video!

Awesome test. I had just asked if you'd do this test a few weeks ago. Nice video!!!!

Love the videos Richard. You should do a video explaining turbo efficiency maps and why they have falling boost curves.

Thanks again, appreciate the information and clarification, cheers

A very informative video!

budget boost is a great thing

Oooooo that intro music sure got me in the mood

Keep it up Rich, awesome channel, waiting to hear more data for the Buick Camp please..

Love the turbo videos

Thank you 50 times over!!! I'm so tired of people on forums yapping about not bothering with cams or ports. "Why are you gasket matching, pocket porting and changing the cam? You are adding boost anyway, what's the point? " Because making your motor as efficient as possible will really get the numbers up there! A well built VQ37 making 450na will do 1050 at 20psi or 1.4 BAR. 20 PSI on a stock VQ37 might get you 750. That's a huge difference and less strain on the motor. People just don't understand, I would love to see twin gt45s vs twin 475s. Maybe a compound setup in the 4 liter 2jz type in the land cruiser!! Stock vs ported, built and cammed.