Quote:
Originally Posted by mcrews
as I have stated over and over.
Stock exhuast is just fine for eco driving.
Someone PLEASE show me ANY documented test (hp preintout etc) showing improvement at the low end.
ALL the 'hot rodder bolt ons' (cai, k&N, flowmaster....etc......) show improvement ONLY at the top end.
Where (unless you are racing) you spend 1% of your engine's entire life.
note: if you spend more than 1% of your time at wot......your on the wrong forum.
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for unloaded mpg I'd agree but with the op having a heavy burb and it being so heavy it could benefit while towing.
Here is a thread that shows improvement in the mid range & up. (quick search)
BASSANI - HR exhaust Dynos from Z-Car Garage - MY350Z.COM Forums
No Cooler
http://i41.photobucket.com/albums/e2...n1nocooler.jpg
With cooler
http://i41.photobucket.com/albums/e2...run1cooler.jpg
graph showing the average delta from with & without cooler
http://i41.photobucket.com/albums/e2...oDataplot1.jpg
before & after data collected in the same afternoon with the cooler data being last. Ambient temps started out in the mid 80's and we finished up with the temps in the low 90's. I heat soaked the engine compartment before each set of runs (3 each before & after). All of the raw data is in that photobucket folder although not easy to read.