Quote:
Originally Posted by mcrews
"Your chart is wrong. Many factory vehicles produce more than your max hp figures."
Ok, that sentence really is not factual. sorry.
Starting with A and going forward alphabeticly.......
please list the many factory vehicles that are over 935hp.........
come on, lest than 10% of all factory vehicles can make 500hp.
Better yet, find me a chart that disputes the one posted.
Pipe Dia. (inches).....Total CFM (est.)....Max HP for 1 Pipe.... Max HP For Dual System
1 1/2 .......................171.................... 78........................... 155
1 5/8 .......................203 ....................92 ..........................185
1 3/4 .......................239 ...................108 .........................217
2 ............................ 318 ...................144 ........................289
2 1/4........................ 408 ...................185 ........................371
2 1/2 ........................ 509 ...................232 ......................463
2 3/4 .........................622 ...................283....................... 566
3.............................. 747 ....................339...................... 679
3 1/4........................ 882................... 401 ........................802
3 1/2.........................1029 ..................468 ......................935
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Here is your chart again. Don't take a single line of it and claim the entire chart is accurate because you can't find any vehicles with twin 3.5" exhausts. When you list maximum horsepower for a pipe size it should have some vague correlation to be a bit larger than common vehicles producing those horsepower figures.
Let's start at the top:
Honda Civic Si 1.6l engine 1.5" exhaust 130bhp way more than your max of 78hp
Acura Integra GSR 1.8l 1.75" exhaust 180bhp way more than your max of 108hp
Honda S2000 2.0l 2" exhaust 240bhp more than your max of 144
Subaru Impreza WRX 2.25" 227bhp more than your max of 185
Dodge SRT4 2.4l stg3 2.25" exhaust 310bhp your max 185
Chevy Corvette Z06 2 1/8" exhaust 505bhp your max for 2.25 duals 371
Cherokee SRT8 2.75" single exhaust 420bhp your max 283
Bugatti Veyron SS 3" dual 1184bhp your max 679
The problem with your list is that it's entirely incorrect. If it was just a few odds and ends here and there that were 20% off the mark I wouldn't complain. We're seeing horsepower numbers well over 50% above your stated maximums.
The one thing worse than not posting a list is posting an incorrect list. If people read this and take it as fact then make decisions for their eco mods based on your list you're doing them a big disservice.