Stacking H.P. math, myth or magic ?
Melting Slicks
Joined: Feb 2007
Posts: 3,194
Likes: 10
From: New Smyrna Beach Florida
What you described is commonly known as "Ricer math".
Never heard that before, pretty funny. Obviously stacking hp doesn't work. Components work together as a package to get an end result.
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
There is some truth to "ricer math" The only catch is that the numbers are generally much smaller than advertised. However most modifications support eachother. For instance: (using arbitrary numbers)
Mod 1: Cold Air Intake = +10 rwhp
Mod 2: Cat back exhaust = +10 rwhp
Mod 1 + mod 2 = ~15rwhp
A great example of a supporting modification is getting an aftermarket intake manifold after dropping in a custom cam. Normally an aftermarket intake manifold will net you only 3-5rwhp but after some cams people have seen as much as 10-15 rwhp increase.
Mod 1: Cold Air Intake = +10 rwhp
Mod 2: Cat back exhaust = +10 rwhp
Mod 1 + mod 2 = ~15rwhp
A great example of a supporting modification is getting an aftermarket intake manifold after dropping in a custom cam. Normally an aftermarket intake manifold will net you only 3-5rwhp but after some cams people have seen as much as 10-15 rwhp increase.
Melting Slicks
Joined: Oct 2006
Posts: 3,447
Likes: 6
From: Los Angeles
Generally, manufacturer claims don't mean squat. For example, when I had my supercharged Toyota Tacoma, the K&N FIPK that sold for 230 bucks claimed a 15-20hp increase... when it actually dynoed a 3 hp LOSS over the stock air box. As a result, I went for a dyno proven method instead. I just cut a hole in my airbox for 5-7 more rwhp. Granted that was on this platform, my point is... just do your research. Somebody else has probably already tried it.
Former Vendor
Joined: Nov 2005
Posts: 8,995
Likes: 2
From: Spring Texas
St. Jude Donor '08
The biggest obsticle for most of us is that most manufactuers with dyno claims test their products on stock cars (many will use a stock Zo6 as their base vehicle) I doubt any HP enthusiast here has only 1 mod on their car.
What i'd really love to see is a dyno graph that shows HP/TQ change over the entire powerband. This would be excpetionally useful for those seeking the low end "umph"
What i'd really love to see is a dyno graph that shows HP/TQ change over the entire powerband. This would be excpetionally useful for those seeking the low end "umph"
Thread Starter
Drifting
Joined: Nov 2007
Posts: 1,554
Likes: 2
I had a Dynomite custom tune performed yesterday.
Baseline came out at 302 RWHP
Final pull 330.6 RWHP
The tech assesed 10 HP LOSS due to canned tune.
At crank is 411 HP
A nice thread with pic and graph was posted in the C5 Tech section.
Baseline came out at 302 RWHP
Final pull 330.6 RWHP
The tech assesed 10 HP LOSS due to canned tune.
At crank is 411 HP
A nice thread with pic and graph was posted in the C5 Tech section.
Last edited by 50th@50; Mar 31, 2008 at 02:30 PM.
