Hard tests confirming aftermarket cat back increases power
01-04-2013, 10:41 PM
#24
Senior Member
Thread Starter
Centex, I don't have links, but a while back somebody swapped the stocker for a Blowmaster and posted dyno charts with a 15 hp gain. I am highly skeptical, though, for many reasons. Not the least of which was when someone made several runs through the stock cat-back, then dropped it and made several more runs. The gain was zero at the track. If no exhaust is no faster than stock, then there is no reason an aftermarket exhaust would be faster than either one.
Technically, larger pipe will have less backpressure. However, if stock is negligible, then larger pipe or no pipe will not show a measurable difference.
And before anyone says you need backpressure or velocity to make power, you're simply wrong so don't bother.
Technically, larger pipe will have less backpressure. However, if stock is negligible, then larger pipe or no pipe will not show a measurable difference.
And before anyone says you need backpressure or velocity to make power, you're simply wrong so don't bother.
01-04-2013, 10:51 PM
#25
I did my exhaust because I wanted it to sound different than stock. I say different because sound is subjective. I think it sounds good, others say it sounds like garbage. If you are doing exhaust strictly for performance then doing downpipes is prolly all you need.
01-04-2013, 11:19 PM
#26
Senior Member
Thread Starter
That's what I'm after. This truck will never sound good in my opinion. But I can at least have my turbo whistle and performance without the goose fart exhaust note.
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Bills96TA (01-06-2013)
01-05-2013, 01:03 AM
#27
Senior Member
Originally Posted by engineermike
Centex, I don't have links, but a while back somebody swapped the stocker for a Blowmaster and posted dyno charts with a 15 hp gain. I am highly skeptical, though, for many reasons. Not the least of which was when someone made several runs through the stock cat-back, then dropped it and made several more runs. The gain was zero at the track. If no exhaust is no faster than stock, then there is no reason an aftermarket exhaust would be faster than either one.
Technically, larger pipe will have less backpressure. However, if stock is negligible, then larger pipe or no pipe will not show a measurable difference.
And before anyone says you need backpressure or velocity to make power, you're simply wrong so don't bother.
Technically, larger pipe will have less backpressure. However, if stock is negligible, then larger pipe or no pipe will not show a measurable difference.
And before anyone says you need backpressure or velocity to make power, you're simply wrong so don't bother.
01-05-2013, 08:50 AM
#28
That is true. A 10whp gain with exhaust can be lost with a poor 60' in an et. You need before and after dynos on same day and conditions. SW was supposed to be doing that with 5star right?
01-05-2013, 09:30 AM
#29
FX4 SCrew TT'd V6
Centex, I don't have links, but a while back somebody swapped the stocker for a Blowmaster and posted dyno charts with a 15 hp gain. I am highly skeptical, though, for many reasons. Not the least of which was when someone made several runs through the stock cat-back, then dropped it and made several more runs. The gain was zero at the track. If no exhaust is no faster than stock, then there is no reason an aftermarket exhaust would be faster than either one.
Technically, larger pipe will have less backpressure. However, if stock is negligible, then larger pipe or no pipe will not show a measurable difference.
And before anyone says you need backpressure or velocity to make power, you're simply wrong so don't bother.
Technically, larger pipe will have less backpressure. However, if stock is negligible, then larger pipe or no pipe will not show a measurable difference.
And before anyone says you need backpressure or velocity to make power, you're simply wrong so don't bother.
Sorry, I had to
