Easy HP increase mod to our M45

[fiveliterbeater]

.....i got the idea from one of the other board members when they did a full catback on their M45. I liked their setup, but personally, i'm kinda done with loud exhuasts or "humming" on the highway after years of driving mustangs and camaros. I like peace and quiet inside the cabin when i roll all the windows up;......but, i would'nt mind a few free ponies if i could modify the exhaust to be more free flowing, yet keep the noise down at the same time. pics will be up tonight when i get home, but what i did, is remove the "X" pipe setup under our car and make the car a "true dual" all the way back. i went to my local muffler shop and had them perform the modification, but keep my stock mufflers at the same time. the final test came when i opened the car up on the road and floored it. the result was me having a big grin from ear to ear.the car pulls harder now and their is less resistence from the car in the upper RPM's (when the car is obviously pushing out the most air).and the main thing is, NO noise. Now please don't think that this setup will outperform a full catback system cause it won't. having a full catback system will net you the most HP possible when modifying your exhaust. this "mod", just gives you about half of the gain you would see from doing a full catback setup at about a fraction of the price and of course, NO noise. again, pics will be up tonight. stay tuned.

[ken in az]

Actually we have more of a Y-Pipe rather then an X pipe.

An X-pipe would actually give more power through scavenging and a unique smooth sound.

how much did this cost? Did you remove the rear cats or the resonators?

thanks!

[Q45tech]

Please measure and post the hundreths of a second [as read at quarter mile or accurate digital stopwatch] you changed acceleration.

The point is it takes 10HP or 10 lb/ft of torque to change the quarter mile time by even 0.1 seconds.

Seat of pants or sound often fools the home modifier [would be engineer] in changing oem systems.

[fiveliterbeater]

the muffler shop did it for $80 bucks. the reason i say an X pipe is because the piece that came off is literally an "X", not a "Y" pipe. either i'm seeing it wrong, or i have a differnt concept of an "X" pipe. ill post pics tonight, let me know.

[ken in az]

Please measure and post the hundreths of a second [as read at quarter mile or accurate digital stopwatch] you changed acceleration.

Why?

The point is it takes 10HP or 10 lb/ft of torque to change the quarter mile time by even 0.1 seconds.

Bull Sh*t and how bout you break out your physics book to try and prove me wrong

Seat of pants or sound often fools the home modifier [would be engineer] in changing oem systems.

Aren't you the positive one - why are you taking pot shots at someone obviously trying to post useful information?

I've got an idea....since you are so anti performance why don't you refrain from posting in any performance related thread from here on out - k thanks!

Oh, and hows your M45 running?

[qship96]

Sorry, I dont see how removing the X pipe could possibly increase power at all? You are not increasing pipe size or decreasing resistance in cats/mufflers,etc one bit. Different sound, yeah I can see that, but no more power at all.

[ken in az]

Sorry, I dont see how removing the X pipe could possibly increase power at all? You are not increasing pipe size or decreasing resistance in cats/mufflers,etc one bit. Different sound, yeah I can see that, but no more power at all.

Yeah, you're right. it is completely impossible to improve performance by going with a true dual exhaust and eliminating that completely restrictive Merge.

Have you even looked under an M45?

[fiveliterbeater]

Sorry, I dont see how removing the X pipe could possibly increase power at all? You are not increasing pipe size or decreasing resistance in cats/mufflers,etc one bit. Different sound, yeah I can see that, but no more power at all.

I don't mean to sound like i'm scolding you brother, but you are wrong when you state that a "true dual" setupwill not net you more HP than a Y-pipe setup and here is why:My M45 is probably my 17th car i've owned since i turned 18 and i am now 30. while most people spent money on a college education, i spent it on making my long list of Z28's and 5.0 stangs go faster than they normally do. if there is one thing i learned over the years; its that cramming air into a Y-pipe slows down the air being forced out of the motor; but if you can have each side of the block flow air straight out the back with no restiction, the engine WILL net you more HP. not enough of course to make everything turn into a blurrr when you hit the gas, but enough to put you in your seat and go, "hmmm, i can feel a difference"

[fiveliterbeater]

Please measure and post the hundreths of a second [as read at quarter mile or accurate digital stopwatch] you changed acceleration.

The point is it takes 10HP or 10 lb/ft of torque to change the quarter mile time by even 0.1 seconds.

Seat of pants or sound often fools the home modifier [would be engineer] in changing oem systems.

....not trying to start anything but where did you get that formula from? if that is true, i could've used you when i used to race my cars illegally for money. ...and as far as getting out a stopwatch to see the difference in time,......the mod is definetly not enough to bust out a G-tech meter or merit a trip to the track, but i guarantee, if you're not going to do a full exhaust anytime soon, this mod will definetly make you happy....or i will pay you for the time you lost reading this post.