Por-Vettes - Ok I'm a believer now
11-15-2013, 12:58 AM
#167
1st Gear
Join Date: Nov 2013
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I drive an 85.5 every day as my daily driver with almost 300,000 miles. After reading this thread I am now praying that my engine gives out instead of keeps going, so I can too become a part of the Por-vettes club!!!
I can't wait to do a swap like this...
One question I do have is, how would it be as a daily driver? I drive between 60-100 miles a day and love every minute of it in my Porsche now. Also, what kind of gas mileage are you guys getting? Again, I drive a lot. Thanks!
I can't wait to do a swap like this...
One question I do have is, how would it be as a daily driver? I drive between 60-100 miles a day and love every minute of it in my Porsche now. Also, what kind of gas mileage are you guys getting? Again, I drive a lot. Thanks!
11-15-2013, 10:30 AM
#168
Rainman
Rennlist Member
Rennlist Member
I daily drive my 5.3L LM4 and if easy on the throttle, I can get mid 20s and close to 30MPG highway cruising. A decent tune that leans out cruising a bit can add a few MPG over a stock tune.
Also, don't go too crazy loud with the exhaust, the exhaust noise is the first to wear you out. I ended up setting up my exhaust going from dual 2.5" into a 3" Y, into a Magnaflow muffler where the stock cat is, and another muffler at the rear. I have since removed the rear muffler to add some more sound, but that introduced drone around 1800-2000RPM, but that will be fixed soon with an addition of a helmholtz/quarter wave resonator (a quick tip to the V8 guys, a quarter wave chamber that is 28" long tends to take out that drone perfectly).
Here is a quarter wave example (they call it a j-pipe setup):
A nice setup would include adjustable pipe length just to truly dial it all in.
And a helmholtz example:
When done right, the drone just disappears. I've been wanting to do this for ages now, but haven't had a reason to. It's nice to see that some have discovered it and implemented it successfully.
Also, don't go too crazy loud with the exhaust, the exhaust noise is the first to wear you out. I ended up setting up my exhaust going from dual 2.5" into a 3" Y, into a Magnaflow muffler where the stock cat is, and another muffler at the rear. I have since removed the rear muffler to add some more sound, but that introduced drone around 1800-2000RPM, but that will be fixed soon with an addition of a helmholtz/quarter wave resonator (a quick tip to the V8 guys, a quarter wave chamber that is 28" long tends to take out that drone perfectly).
Here is a quarter wave example (they call it a j-pipe setup):
A nice setup would include adjustable pipe length just to truly dial it all in.
And a helmholtz example:
When done right, the drone just disappears. I've been wanting to do this for ages now, but haven't had a reason to. It's nice to see that some have discovered it and implemented it successfully.
