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Westers Question

fmjcafe

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fmjcafe Enthusiast

fmjcafe

Posted
Posted

I e mailed Lyndon about this but haven`t heard from him yet so I thought I`d throw it out here. I`m waiting for my PCM that I ordered through the recent group purchase. In the mean time, I`ve come onto a deal on some rims and tires off of an `04 SS. The tires on the SS are P275 55 R20. They are .1" greater in diameter then my current P265 70 17 Bridgestones. What I want to know is will the 1/10" difference cause any problems should my PCM show up before I get hold of Lyndon. I have a sneaking suspicion my new computer is in the mail.

 

I doubt it will be a problem but enquiring minds want to know....

:loser:

fmjcafe Enthusiast

fmjcafe

Posted
  • Author
Posted

Well, my intuition was right. My PCM arrived yesterday. I called Lyndon and he confirmed that a .1" difference in tire diameter is insignificant. I`ll be installing my PCM today and I leave in a 1000 mile road trip to Minnesota friday morning so I should have some good info on how the tune does as far as milage is concerned.

fmjcafe Enthusiast

fmjcafe

Posted
  • Author
Posted

Ok,

I installed my PCM today. Installation was a breeze. I buttoned everything up and fired her up. The truck started and idled smoothly on the first attempt. I went out for a test drive. Normal around town driving feels the same as stock. I got to a stretch of road where I could air her out a bit and right away noticed that the shift points are raised and the truck feels much peppier. The passing gear kicks in with much more authority. I haven`t done any dead digs yet but did goose it a bit off the line and could feel the tires breaking loose.

 

The real test will come this weekend. in the morning I`m hitting the road for Minneapolis to visit my brother who just happens to have a stock `04 SS. We will try to get them lined up for a little show down and a nice road trip will give me a chance to see if there are any milage gains with the Westers.

 

Oh, I almost forgot. I did have one problem with my new PCM. The temp guage stopped working. When I first start the truck it comes up, holds for a few seconds and then drops to zero. Lyndon say`s he had one other customer a while back with an `01 report the same problem. In that case the guage started working on it`s own after a while. I`m taking a wait and see approach.

fmjcafe Enthusiast

fmjcafe

Posted
  • Author
Posted

I got back from my road trip today and can report a 1 mpg increase in fuel mileage to 17.87 mpg. I talked to Lyndon and he say`s it`s probable that it will get better with time. The truck has much more mid range punch now. Passing people is a real blast. I didn`t manage to get lined up against my brothers SS but I did get to drive it and I think it would be an interesting race but I would have to give the edge to the SS. They are bad a$$ trucks!

 

The problem with the temp guage sorted itself out.

PewterC3 Enthusiast

PewterC3

Posted
Posted

Most speedo's are slightly off....to the low side. Show 60 and really be going 58. I would think that the .1 difference would just about make it dead on.

stlmaj Enthusiast

stlmaj

Posted
Posted

fmjcafe

 

Glade to hear your enjoying your new Westers. At last your wait is over! LOL

 

Matt

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