Originally posted by Big-Al
Aaron T, I am just wondering how you got that much power out of that few mods. You can reference Johnny Langton above who made about your same power only after having every bolt on known to man on his Bird. You have what....chip and pulleys and exhaust? That does not equal 196 rwhp on any Bird I have ever seen. That is whay I am asking what's going on with your car. I personally just made 192.7 rear wheel horse power but that was with a HOST of mods.
I put up the comparison so you can see what I am talking about.
Big-Al: 192.7 hp...........................Aaron T: 196 hp
Chip from the man..............................Chip
3:73 traction lock rear end..................Dual exhaust
Aluminum drive shaft...........................pulleys
80 mm MAF
Custom Intake tube
(I think that is it)
See what I am saying? Your hp is way high for the mods you have, which is good, but needs explaination.
Let's go one by one:
-Aluminum driveshaft provides very little power gain especially if it is larger diameter than the steel one which they usually are (larger diameter increases moment of inertia). I'd say 3 hp tops and only above 5000 rpm. Less below that.
-Torque converter will only provide a hp gain if it is much smaller in diameter and weight. A 3 inch decrease in diameter and shaving 30 lbs off the weight is worth about 10-15 hp at 5000 rpm. Do the math if you don't agree. I have for my 4l80e trans in my chevelle because it came with a 13" 65 lb converter.
-Gear change provides zero hp gain.
-As was already said J-mod gives no hp gain.
-We'll assume the chips to be a wash even though the j-chip is probably better.
-And the pulleys are a wash.
That leaves us with intake mods (maf, tube, filter) and a cat back vs. a true dual exhaust to account for the difference. And a true dual exhaust is a much more significant mod. If you still have your stock y-pipe you're lucky to get 5-10 hp from just the cat back and intake mods combined. You can only make as much hp as your biggest restriction. Think about it, you probably have a 3 inch intake tube but the stock y-pipe is squashed to less than 2 inches at one point. Can't intake more than you can exhaust. I'll take the stock violin case intake/maf and a true dual exhaust over a 3 inch intake and cat back any day.
Also, it's a common misconception but bolt ons don't add up in the hp column directly. Each successive one adds less and less exponentially. And when it's all said and done a good exhaust is always the hp/dollar champ!
And I still say 20 more rwhp ain't enough to go mid 14's without gears.