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    Eaton M65 vs M62 vs TVS R410 vs R1320

    There are some great articles on exhaust sizing on the technical info part of this website. Back pressure is a myth that just won't die and keeps being resurrected on forums. Exhaust velocity and speed matters. I have a 2.5 in header to 3 in catback and that's the sweet spot for my 3.4L 375HP...
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    Conversion from manual to automatic

    The simplest way to do it is to buy a wrecker of your exact vehicle (you didn't share what that is) that has an intact auto transmission. That way you have the right ECU/PCM, wire harness, driveshaft, relays, etc the list goes on and on. Trying to install one yourself with your own programming...
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    Eaton M65 vs M62 vs TVS R410 vs R1320

    Yeah I understand about costs. For my engine, there's only one unit that fits made by the manufacturer and it costs $3500! If I were to pick up a used M90 with the standard manifold used it could be had for only $200. There's no direct fit adapter to work on the intake manifold though and it...
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    Eaton M65 vs M62 vs TVS R410 vs R1320

    I don't have a Mercedes, but I do have some experience with the M62. It's a good, reliable unit and makes decent power. I have it on a 3.4L engine and it's a bit small, an M90 would be more efficient since I have to over spin the rotors to make power. The M62 does run very hot and I am unable to...
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    Lightweight vs. Grip - Which is Most Important?

    Thank you! That was super helpful and is having me lean towards the lighter tire (or tyre for the UK folks :P). I did have a Detroit Tru-Trac put in a few years ago and it did help a ton in dry driving. I found that my wet traction has worsened as before I'd just have one rear tire slip on slick...
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    Father/Son Project Car

    The K20A out of a JDM made Type R is a quick little engine. Add a turbo and you've got a beast on your hands. That would be my recommendation. The whine of an engine that revs over 8000 RPM is a sound to behold!
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    Lighten bottom engine pulley worth it?

    I would contact an engine builder or tuner that's familiar with the N14 mini engine. I have no experience with them but Lohen based out of the UK has done a lot of work on the N14 engine. It never hurts to ask an expert about it. I've contacted many Toyota performance shops over the years and...
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    Spark plug creativity?

    I am using Ruthenium plugs but it's the special tipped design that comes side gapped with a shorter ground strap to have less material impeding the expansion of the flame kernel. It's a known way to squeeze a few more HP out of a forced induction engine. So far so good but it's only been about 6...
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    Lighten bottom engine pulley worth it?

    It really depends on your application and whether or not the engine pulley, or crankshaft pulley, is also the harmonic balancer. For my engine, the Toyota 5VZ-FE, the engine is internally balanced so the pulley can be replaced with an aftermarket aluminum one. I did this a few years ago and...
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    Lightweight vs. Grip - Which is Most Important?

    I have a performance Toyota 4Runner that I've built up to around 375 HP. I don't offroad in it so it spends its life on the pavement. I am due for tires in the next year or so and I've been looking at two separate tires, one being the Firestone Destination LE3 and the other being the Continental...
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    Hello! S/C 4Runner Here

    Thanks! Looking forward to learning more about how to crank more power out of this rig!
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    Hello! S/C 4Runner Here

    Hi all, I came across this site a few days ago, not sure how I ever missed it! Been pouring over the articles as they have been super helpful (and very consistent with my experience with tuning and engine modifications)! My ride is a 1998 Toyota 4Runner. Very capable off-road, one of the best...

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