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I keep slacking on updating this. I figured out the issue. The factory plugs are different on my car. After talking with a mustang guru, my 2001 is the early model where the MAF and intake air temp and separate and other small differences, like these cop plugs. My cops have notches on the...

Im getting very close finishing my 4v swap but I ran into a snag. I have read many swap forums about swapping the wires on the coil on plugs but my issue is that Im using the factory 01 GT harness and I have cobra COP but the plug from the harness only fits half way onto the cobra COP. I can't...

As the title states, do I need to re-tune my car if I change tire size? Can you just go back into the programming and change tire size and not worry about the tune? Or will things change like load, a/f ratio and such?

I'm planning on placing my turbo between the motor and radiator but it's freaking tight! I have a 2001 mustang, 4v motor, and s475 75/83 turbo with a 1.10 a/r t4 housing. The biggest problem is Im trying to keep all accessories, including power steering, abs, and a/c. I can live without a/c but...

So, I got a Teksid block and terminator heads. I ordered the felpro 1141 gaskets. When I'm putting on the gaskets, the front coolant passages are being blocked on both left and right sides. Are you supposed to drill them out yourself? Also, all the other passages only have really small holes in...

I'm in the middle of my build for a 700+ rwhp 4v through a 4r70w and need to start looking at turbos. I hear lots of great things about the precision 7675, but really like the sound and price of the borg warner units. I'm thinking about the s400 with a 75 mm compressor wheel and 83 mm turbine...

Selling my custom turbo kit (made by FinishLine performance here in Denver) off my 88 Foxbody with a 351w so that I can sell my car. This sale is for a near complete kit. No fuel injectors, fuel pump, driver side header (cuz you use the factory or aftermarket shorty header driver side) and no...

Ive got a chance to buy a complete long block with accessories for $350. The only down side is that it has 300k miles on it. the motor is from a 98 Mark viii? Should I wait for something else? Can the lines just be replaced and call it good? Guy said he can pull it by tomorrow. Read more at...

Hey everyone. After playing for years with the pushrods, I'm joining the modular crew. Been doing a ton of research but have been coming up a little short on some info. I'm going to be getting a mark viii motor and need some combo advise. Pretty set on c heads, but trying to figure out which...