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Old 02-27-2012, 12:50 PM   #11
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Join Date: Apr 2008
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Location: Ashland, OR
What I Drive: 2003, Silver, ZX3 2.3 5-speed

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Originally Posted by karmakc View Post
I will do that. For the short term, I'm going to keep my current tires on to assess the wear vs alignment for the new set up.

I noticed that you mention Autolite 103's in your signature. Since you have the same motor as I do, what is your feedback on have the colder plugs?

Is there a noticeable power difference? How about fuel economy?

Try as I might, over the last year, whether I have a feather light foot or a heavy foot, my minimum has been 19.5 mpg to 29.0 mpg. The lower end was almost only in the city and the 29 was mostly highway. I've yet to crack the 30 mpg barrier and I was wondering if changing the plugs may help with that.

Your thoughts...
Some guys on the forum Dyno'd them and claim 5hp. I did notice a slight improvement and for $8 it's not a bad investment. The power definitely smoothes out but that will happen with any new plugs you install. Not sure if there was much improvement on MPG but I'll let you know after I burn the current tank of gas as I just changed my plugs last weekend and I check my MPG after each tank of gas.
Autolite 103's, Cosworth CAI, FRPP Suspension, Strut Bars, DIY Short Shifter, SVT Air Dam, BSD, Poly Trans Mount, Borla 2.5", Roush Wheels, Tune...
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