Adding headers to a Nissan....

[whywhyzed]

Re: Adding headers to a Nissan....

plugged catalytic converter?<br />like, since new maybe?<br />I dunno - that can't be right- My Cadillac Deville with it's 275HP V8 gets better mileage<br /><br />The old K cars used to have a switch on the throttle linkage, when you pressed hard on the accelerator the switch cut the A/C compressor....maybe you could rig up something...

 

[Moody Blue]

Re: Adding headers to a Nissan....

If you are going to get into it, do it right. Don't waste money on a header if the rest of the system is restricted. No net gain but you will be poorer.<br />I had an early 80's Toyota 4x4 with the 22R engine. Added a Weber 40MM side draft carb, header, K&N filter and replaced the entire exhaust system with 2" pipe and finally replaced the cam with a Competition cam. Never had it dynoed, but the difference was night and day when running the 36" super swamper tires

 

[Johnshan1]

Re: Adding headers to a Nissan....

That MPG sounds good, my '97 Dakota 5 speed 4 banger gets 20 mpg in town or highway, and about 12 when towing.

 

[waterinthefuel]

Re: Adding headers to a Nissan....

Hey John,<br /><br />Welcome to the world of small 4 bangers. People don't realize how hard a 4 has to work at highway speeds, especially in a truck. <br /><br />I've spoken with a 30 year mechanic about my gas milage and his eyes were large until I mentioned the rpm required to do 70, then he said, "yea its your gear ratio, no doubt". <br /><br />I don't really have the nickels to do much with it right now. That same mechanic said to modify in the following order to take advantage of the law of deminishing returns:<br /><br />1. headers--most bang for the buck<br />2. hi-flo tailpipe<br />3. intake mods<br />4. cam mods<br /><br />2 and 3 are a tie really, but I had to put one first. He didn't say the gas milage would go up much, but did say the pep should be better.