Midpipe
#1
Midpipe
Mods: Intake, Pettit ECU, Full exhaust, upgraded SMIC, 13psi
I used to have just an HKS dowpipe and some other aftermarket catback system with a stock midpipe and I would pull away from my brothers Mustang easily on the highway.
I then installed a 3" midpipe with highflow cat. We then went to the track last weekend and I was side by side with my brother and wasn't able to catch up.
My highest trap speed was 108mph.
I am wondering if this has ever happened to anybody before and if that trap speed is accurate for my mods.
Thanks guys!
I used to have just an HKS dowpipe and some other aftermarket catback system with a stock midpipe and I would pull away from my brothers Mustang easily on the highway.
I then installed a 3" midpipe with highflow cat. We then went to the track last weekend and I was side by side with my brother and wasn't able to catch up.
My highest trap speed was 108mph.
I am wondering if this has ever happened to anybody before and if that trap speed is accurate for my mods.
Thanks guys!
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#8
Can't live without boost.
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My FD is actually running a similar combo:
1. Downpipe
2. Highflow cat
3. Resonated midpipe (right after the high flow cat)
4. Catback
So you're saying you have all that installed?
1. Downpipe
2. Highflow cat
3. Resonated midpipe (right after the high flow cat)
4. Catback
So you're saying you have all that installed?
#14
Rotary Freak
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Is there a place that shows how these parts flow, that way you can compare them? It would suck to put in an aftermarket ( high flow ) cat, and lose power.
Has anyone tried random technology or the one at the rx7 store?
Has anyone tried random technology or the one at the rx7 store?
#17
Eats, Sleeps, Dreams Rotary
iTrader: (52)
Now that the terminology lesson is out of the way.......
A high flow cat VS. the original cat likely wouldn't make the difference you are speaking about. Especially since the cat you put in is utilizing a 3" pipe. What flow you would loose over the stock cat is likely miniscule considering the pipe enlargement with the aftermarket cat....
That said,....is that all you have changed? Are you running the same boost?......how much noticable power difference?
A high flow cat VS. the original cat likely wouldn't make the difference you are speaking about. Especially since the cat you put in is utilizing a 3" pipe. What flow you would loose over the stock cat is likely miniscule considering the pipe enlargement with the aftermarket cat....
That said,....is that all you have changed? Are you running the same boost?......how much noticable power difference?
#19
The difference is a good 2-3 car lengths per gear. I found it strange that after I put on the 3" midpipe I actually had to turn up the boost controller by a few % points to get the same boost levels as before. Besides that I also changed to a fluidyne rad but don't see what that would affect in power. Everything else is the same.
Plugs changed last summer. They could probably be changed again. Don't know intake temps as im running Pettit ECU.
Plugs changed last summer. They could probably be changed again. Don't know intake temps as im running Pettit ECU.
#24
F'n Newbie...
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This was already thoroughly beaten to death once in this thread.
And, while we're on the subject, of you want to be ABSOLUTELY accurate with ALL terminology, then anybody who is running a free-flow exhaust system should be castigated for referring to their cat-back as a "cat-back".