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k&n filter / slp headers / flowmaster 40s

joeboi

joeboi

New member
I had a terrible noise and found out it was my manifold. I replaced them with headers from slp. They are making a ticking noise, but thats not the problem. I had exhaust done with flowmasters. They sound great....the problem is i feel like ive lost horses from when it was stock till now. I did a tune up replaced the wires and plugs. Please help....is it me or am i doing something wrong???
 


unless you tune for the headers it will feel like you lost power because your powerband will have moved up in the RPM range. your car will pull a lot harder from about 50-80 instead of 30-60 like before.

headers are making more power, not less.
 
I was about to say I have a set of manifolds if you want your low end torque back. And I'll trade you straight up for your headers :p

LOL
 
yea trust me your not losing power with those headers. just more top end your getting... and yes the slp headers are known to tick
 
also, i like how you said your flowmasters sound good. lol

i had flowmasters and they do not sound good. maybe at idle, but who idles around town. wait until you burn them in and get the 43 mph drone and the poppy crap when you let off from WOT.
 
yeah , the flowmasters are droney as **** on our cars... flo-pro's sound good, and dynomax mufflers are good as well.
 


Bio248 said:
also, i like how you said your flowmasters sound good. lol

i had flowmasters and they do not sound good. maybe at idle, but who idles around town. wait until you burn them in and get the 43 mph drone and the poppy crap when you let off from WOT.
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haha i kinda like the poppy crap dentist drill sound, its funny
 
thanks i didnt know if i was or not. But now that i know thanks i look into getting it tuned. so u guys dont like flows huh? hahaha i was going for slps cat backs. flows arnt to bad for now i guess. thanks im new to this
 
I like the Flowmasters that I have heard and who drives 45 anyway. HAHAHA I was thinking about getting them my self. I had Dynomax on my Trans Am and the flowmasters were a hudge differance. Way better
 
well they sure dont stay new forever. mine got worse over time until i took a sawzall to those sum*****es.
 


My Magnaflows are a perforated three-chamber design. They broke in over the first few months and sound great now. No drone (and I have no resonator).
 
The picture doesn't, it shows the steel plate baffles. My point is something else changed in the exhaust not the flow masters. Sorry if my post some how upset you but the truth is the truth. Now other mufflers with some type of packing in them then yes they can "burn in". It's just when I read something that is obviously misinformation i try to correct it. There is too much misinformation allready floating around the net we don't need anymore. Do me a favor call flowmaster and ask if you can break in a chambered muffler lol.
 
joeboi said:
I had a terrible noise and found out it was my manifold. I replaced them with headers from slp. They are making a ticking noise, but thats not the problem. I had exhaust done with flowmasters. They sound great....the problem is i feel like ive lost horses from when it was stock till now. I did a tune up replaced the wires and plugs. Please help....is it me or am i doing something wrong???
Click to expand...

how long has it been since you put the headers on?? did you reset the computer (disconect battery for 15 mins) you might need to so the computer can relearn its new modifications. also it will still take about a week for the computer to get adjusted. my car felt slower at first but its deff faster now even with no tune.
 


Shaunk said:
The picture doesn't, it shows the steel plate baffles. My point is something else changed in the exhaust not the flow masters. Sorry if my post some how upset you but the truth is the truth. Now other mufflers with some type of packing in them then yes they can "burn in". It's just when I read something that is obviously misinformation i try to correct it. There is too much misinformation allready floating around the net we don't need anymore. Do me a favor call flowmaster and ask if you can break in a chambered muffler lol.
Click to expand...

The thing that changed was the muffler. They have break in periods and over time the sound changes as the baffles wear down. They do not burn most likely I am just saying that his wore out and the sound changed.

That's it no hard feelings I am just stating the obvious.
 
Call flowmaster...
Edit
Spoke with flowmaster,
"our mufflers cannot burn in, the only reason the sound would change is if a baffle blew out or the muffler rusted out. If the tone changed with our mufflers on the car some thing else changed. Like a converter getting more or less plugged or melted, a resignator getting worn or the tune changing". Call for your self if you don't believe me. No hard feelings just stating the truth from the manufacturer!
 
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They fed you bull. As metal heats and cools several times over it becomes stronger, slightly more brittle, and vibrates differently. As long as mufflers are made from metal their sound will change over time.
 
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