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After about a year since putting it back together from an intake swap and port job, and almost 2 years in storage (but running) before that, I figured out what I did wrong and what went wrong. My mustang runs better than ever. I had very limited free time to work on it, which caused it to take...

My intake doesn't have EGR runners. I have no emissions equipment. The EGR will not add exhaust gas to the mix. When open, the computer should think it's adding exhaust gas. That should alter the timing/mixture incorrectly. I need to disable this. Do I need a resistor for the EGR plug, or will...

Looking to reduce weight a bit, I found some Lithium Iron Phosphate batteries with high CCA ratings. The difference in weight between them and my current battery is about 35lb. They can handle being charged by automotive alternators and temperatures down to -30C. The chemistry is safe and the...

Hey guys, I have Flowtech 1 5/8 - 3" Longtube Headers and the matching X-pipe. What other brand headers will fit with this x-pipe? They have gasket connections rather than ball/socket: X-pipe: http://www.summitracing.com/parts/big-53625flt/overview/year/1990/make/ford/model/mustang Headers...

I've had my 1990 5.0 GT for 10 years now as my primary vehicle. She needs to be repaid for her years of service, so I'm going to restore her. First car, BTW. I'm looking to do it right, stripped down, blasted with baking soda, rust removed and replaced, wiring re-done/replaced, structural...

My tires are cupping on the inside. I hear a clunk occasionally when making sharp, low speed turns to the right. I wanted to get an alignment, but I don't think that will solve the issue. Shocks/Springs should be good, rack was replaced and alignment done about a year ago when I first...

A 1991 Mustang GT The starter works fine, does not grind and the motor makes only normal noises when the distributor electrical plug is out. When connected, the starter grinds. How could this electrical connection cause an issue with the starter??? :shrug:

I have changed my: air filter distributor fuel filter Checked my: timing fuel pressure The car is popping, which causes a loss of power. It sounds like it may be coming from the intake or exaust, possibly both. Throttle response is gone. It is an intermittent problem, but the car is...

Last time I went to the track, I ran a best of a 13.1 at 107 MPH. This time I ran a best of 13.6 at 103 MPH. Changes since I went to the track: Much better tires (had all season tires) Synthetic Oil Gasket Matched my intake Manifold Electric Fan (no clutch fan) I ran a 13.4 with a 2.6...

GM Syncromesh part# 12345349 is $17 a quart at the GM dealer near me, is there anything I can use instead?

First, I have a 160 degree thermostat, how bad is this for gas mileage and the engine? Can this be beneficial for any reason, including engine wear, considering oil temp? Would there be any benefit to installing a 180 vs a 195 and vice versa? Second, Someone told me that they used AvGas...

Does anyone know what type of bolt goes on the right side of the thermostat housing? I had the wrong one in there, silicone sealed the gap. I need to know the length, thread type and diameter, please.:hail2:

What is the 7th wire in the O2 sensor harness supposed to connect to? I have 3 per O2 sensor and an extra wire...

I was changing my steering rack and tried to pull the rack out by just removing the bolt from the splined connection to the rack. It wouldn't come out after much effort, so I removed the steering column bolts and got it out. When I got everything back together, I was wondering why my...

Goodyear's link: http://www.goodyeartires.com/eagle/eagleF1GSD3_sizes.html Looking at my mods and considering that I'm currently in Florida, do you think these would be a good choice for street/strip tires? I was going to get Nitto555R's, but I need to drive in the rain and don't want to...

Phenolic spacers are supposed to reduce the conduction of heat trough the lower intake to the upper intake, thereby lowering the condution of heat into the air entering the combustion chamber. I've read that it makes a minimal difference, which is probably right, because the engine radiates...

I still have the stock rubber inlet elbow, it fits on my 73 mm mass air and 70 mm throttle body, but I wonder if it is restricting flow. From someone that spent 16 hours porting his intake manifold, do you think this is something I should change out, and with what? I don't need a kit, just...

What is this wire for? It's on the wiring harness side of the oxygen sensor clip. I just noticed it wrapped around the other three about a month ago, is it a ground? I changed the oxygen sensors about 3 years ago when I swapped the motor, but I don't remember romoving this from anywhere...

I ran a best of 13.1@107 It was about 55-60deg F at about 9pm How much better can i go on street tires during the day, i got 9 runs in, so this was about as good as it was going, problem is, i don't know my best 60' because the laser broke. Before this I ran a 13.4 with a 2.079 60' @ 106 mph...

ok, so i was driving and the car seemed harder to shift, i got home and it stalled in gear. I looked at it, and where it 'passes' the header, it was rubbing, melting it and while it still pulls, it flexes, and therefore doesn't disengage the clutch completely. I am obviously going to get a new...