H/C/I low Dyno Numbers??
Thread Starter
On The Tree
Joined: Oct 2013
Posts: 135
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Will not happen if you are set on 3 inch Y and 3 inch cat back.
Personal experience -- Mamo 220 heads, arguably the best available for a 5.7, 227/235 cam, 1-7/8 headers, 3 inch Y and cat back, all kinds of optimization. 395 rwhp. Talk about PISSED. Tuner exact words -- something is wrong with your exhaust.
With open headers, 470. Add X pipe, 3 inch true dual, light clutch, 496.
Yes duals are expensive, but cheaper than buying a cheap exhaust and THEN duals. Believe it or not we are trying to SAVE you money.
Personal experience -- Mamo 220 heads, arguably the best available for a 5.7, 227/235 cam, 1-7/8 headers, 3 inch Y and cat back, all kinds of optimization. 395 rwhp. Talk about PISSED. Tuner exact words -- something is wrong with your exhaust.
With open headers, 470. Add X pipe, 3 inch true dual, light clutch, 496.
Yes duals are expensive, but cheaper than buying a cheap exhaust and THEN duals. Believe it or not we are trying to SAVE you money.
Originally Posted by Dylan Latshaw
you're saying you gained 100rwhp from a different exhaust?
But exhaust issues. Plugged cars, bad merge, etc were also going on. Not just the pipe size.
2 2.5 inch pipes will outflow a single 3 inch pipe. Similarly 2 3 inch pipes will outflow a single 3 inch pipe. So if you go from a 2.5 Y to a 3 inch Y the single 3 inch intermediate pipe is still the issue. So it will not do much of anything to swap Y pipes.
Thread Starter
On The Tree
Joined: Oct 2013
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I understand that. It was mentioned before that flowmaster aren't good for power just soundso if I get a better brand exhaust. (Magnaflow) then it will increase the horsepower? Would rather spend 50 then 500
Trust me when I say I have had the BBK headers and Y and swapping to 1 7/8 headers and 3" true duals made a significant difference. My current set up isnt optimal in my eyes, I am ditching the pacesetters and there crappy x for SE 1 7/8 headers and x I know its choking my car up.
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If its not a daily driver you could simply do it like I had mine. mine was just headers into the Y pipe then about 2' of pipe with a Magnaflow bullet muffler welded on it. I got it from Advanced auto for 80 $ it sounded good. deep and throaty and I know it was flowing well
If its not a daily driver you could simply do it like I had mine. mine was just headers into the Y pipe then about 2' of pipe with a Magnaflow bullet muffler welded on it. I got it from Advanced auto for 80 $ it sounded good. deep and throaty and I know it was flowing well
If its not a daily driver you could simply do it like I had mine. mine was just headers into the Y pipe then about 2' of pipe with a Magnaflow bullet muffler welded on it. I got it from Advanced auto for 80 $ it sounded good. deep and throaty and I know it was flowing well
Launching!
Joined: Jan 2008
Posts: 225
Likes: 1
From: Fargo, ND
ive seen cars gain 150 whp by unbolting dual 3" exhaust with flowmaster mufflers, no joke. granted it was a big block but still. Flowmasters belong in a garbage can.
https://ls1tech.com/forums/generatio...-ford-9-a.html
^^ thats me. tons of ground clearance. Hell even a Mufflex 4" Y pipe setup will gain power over what you currently have.
https://ls1tech.com/forums/generatio...-ford-9-a.html
^^ thats me. tons of ground clearance. Hell even a Mufflex 4" Y pipe setup will gain power over what you currently have.
Thread Starter
On The Tree
Joined: Oct 2013
Posts: 135
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What do you all think? I know true duels will probably gain me a few more hp but I'm thinking of putting in a flowmaster merge (2.5 to 3in) and replacing the flowmaster exhaust with a magnaflow. How many ponies do you think I'd gain?
TECH Senior Member
Joined: Jun 2016
Posts: 22,303
Likes: 3,619
From: Central Cal.
ive seen cars gain 150 whp by unbolting dual 3" exhaust with flowmaster mufflers, no joke. granted it was a big block but still. Flowmasters belong in a garbage can.
https://ls1tech.com/forums/generatio...-ford-9-a.html
^^ thats me. tons of ground clearance. Hell even a Mufflex 4" Y pipe setup will gain power over what you currently have.
https://ls1tech.com/forums/generatio...-ford-9-a.html
^^ thats me. tons of ground clearance. Hell even a Mufflex 4" Y pipe setup will gain power over what you currently have.
I think that will cost more and make less hp than a pair of cuts outs directly off of the headers.
11 Second Club
Joined: Mar 2012
Posts: 1,541
Likes: 15
From: South Florida
What it really comes down to, & has been stated, is a high performance 5.7 V8 is not going breathe well through a 2.5"-3" single exhaust. No matter really what muffler as you will see some differences swapping around. But you still have the long single 3" pipe that is going to cause back pressure. That only gets worse the more power the engine makes. My opinions. It seems to get the best of both worlds, & stay pretty low cost, the cut outs would probably be the best. Agreeing with others that have stated this. Next the SE true dual setup doesn't seem too pricey & shows good gains. TSP also has a true dual over the axle setup or the dumped exhaust. Going to dumped exhaust is a different realm & you don't seem interested in that.
It really is a line you have to walk when getting into performance/street. As there's always cost as well. On your car I would think the exhaust you have maybe holding you back 20-30rwhp which is also in line with what others think. Just guessing. That's also power across the whole board not just peaks. The ms3 cam you have likes to be revved. Your exhaust is hindering with this.
It really is a line you have to walk when getting into performance/street. As there's always cost as well. On your car I would think the exhaust you have maybe holding you back 20-30rwhp which is also in line with what others think. Just guessing. That's also power across the whole board not just peaks. The ms3 cam you have likes to be revved. Your exhaust is hindering with this.
TECH Senior Member
Joined: Jun 2016
Posts: 22,303
Likes: 3,619
From: Central Cal.
^^^^^ I think you stated the situation as well as anyone could. I agree that putting the cutouts onto his single exhaust, would be the best solution for the time being, with true duals when budget permits. Good plan!
Thread Starter
On The Tree
Joined: Oct 2013
Posts: 135
Likes: 0
What it really comes down to, & has been stated, is a high performance 5.7 V8 is not going breathe well through a 2.5"-3" single exhaust. No matter really what muffler as you will see some differences swapping around. But you still have the long single 3" pipe that is going to cause back pressure. That only gets worse the more power the engine makes. My opinions. It seems to get the best of both worlds, & stay pretty low cost, the cut outs would probably be the best. Agreeing with others that have stated this. Next the SE true dual setup doesn't seem too pricey & shows good gains. TSP also has a true dual over the axle setup or the dumped exhaust. Going to dumped exhaust is a different realm & you don't seem interested in that.
It really is a line you have to walk when getting into performance/street. As there's always cost as well. On your car I would think the exhaust you have maybe holding you back 20-30rwhp which is also in line with what others think. Just guessing. That's also power across the whole board not just peaks. The ms3 cam you have likes to be revved. Your exhaust is hindering with this.
It really is a line you have to walk when getting into performance/street. As there's always cost as well. On your car I would think the exhaust you have maybe holding you back 20-30rwhp which is also in line with what others think. Just guessing. That's also power across the whole board not just peaks. The ms3 cam you have likes to be revved. Your exhaust is hindering with this.