Easy HP increase pix

[fiveliterbeater]

Are you ready to get off of the high horse?

I KNOW that Infiniti engineers didn't maximize performance on our cars. Why? Because it's still a luxury car maker Here is another pro H/X pipe Article: Only before and after dynos would show actual gains or losses.

.......you know, i'm not trying to rehash this subject again, but is there anything that you can come up with in YOUR OWN WORDS??? I mean c'mon, what i don't understand is that all you can do, is go out there and COPY and PASTE someone else's words and research. ..are you that lazy that you can't go out on a limb and try to find your own results instead of being a sheep and follow the masses?...all of my talk is because i've actually done something to prove my findings. i've said it before and i WILL say it again: if you go out and do this modification and are not satisfied, i will pay you for your time wasted!

P.S. and can we please get off the "i loose low end torque" B.S. can't break the tires loose from a dead stop I if i lost low end torque brother.

[nmgoodthing]

P.S. and can we please get off the "i loose low end torque" B.S. can't break the tires loose from a dead stop I if i lost low end torque brother.

LOL! You could do that before with it being stock?

You personally probably didn't lose any back pressure due to those horrible bends in those pipes.

[fiveliterbeater]

THIS POST IS TO EVERYONE: I'M SORRY IF I BORED YOU WITH MY FINDINGS.....and yes, coming from a guy who owned a bottled camaro and a procharged 5.0, it is frustrating that they don't make much for our car, but that is not the reason for this post!i was merely trying to squeeze just a few more ponies out of a car that i like because it is "stealthly and quiet". i want to keep it that way, but i saw an opportunity to squeeze a few more ponies out of this beast and i just wanted to share it with you guys. sorry for annoying you guys with my findings. thanx to the rest of you for listening to my post.

[SteveTheTech]

This thread got very carried away. Come on guys. We're all adults lets talk about this like adults. It's not sports, therefore no blood can be shed (manlaw).

Everyone here has their own opinions and we all need to be receptive to others opinions and incite, and learn something from this. Keep the egos in check. We all have tempers and it's easy to angry type a response but that does nothing for your integrity to the others who are reading this and other threads. Remember everything you type and post here is archived and available to anyone who has access to Google.

For an easy cheap mod this isn't too bad, and if the owner is happy with what he has done than that is all that really matters. Their impression and perceived performance gains are what the entire existence of the automobile performance aftermarket is about. Improving things the owner sees as inferior designing is what it's all about.

There is some very good information in this thread but the flaming and poo flinging is more suited for the kids boards. I know the M boards members are better than that.

~fiveliterbeeter- You have a good a start with what you've got there, you can easily add to the straight pipes you have added. An H pipe may be a decent future mod if you feel so inclined. If you choose to leave it as it is more power to you. I have seen someone do this exact same mod and it sounded decent.

[fiveliterbeater]

LOL! You could do that before with it being stock?

You personally probably didn't lose any back pressure due to those horrible bends in those pipes.

well according to you and your friends, i would'nt be able to do it all if i lost "low end torque" .

[szh]

Folks, I missed how quickly this thread went off-track. Sorry I dropped the ball here!

Let's keep it civil ... comments should not be personal and also should not be taken personally.

Thanks for your attention!

Z

[M4T5]

.......you know, i'm not trying to rehash this subject again, but is there anything that you can come up with in YOUR OWN WORDS??? I mean c'mon, what i don't understand is that all you can do, is go out there and COPY and PASTE someone else's words and research. ..are you that lazy that you can't go out on a limb and try to find your own results instead of being a sheep and follow the masses?...all of my talk is because i've actually done something to prove my findings. i've said it before and i WILL say it again: if you go out and do this modification and are not satisfied, i will pay you for your time wasted!

P.S. and can we please get off the "i loose low end torque" B.S. can't break the tires loose from a dead stop I if i lost low end torque brother.

I did this mod and I wasn't satisfied......can I get some money please now!!!

J

[fiveliterbeater]

check is in the mail

[AZhitman]

So unless AZHitman understands exhaust flow design, he will not be of much help.I'm sure he's more than capable of welding up and placing your exhaust up under your car or truck very nicely though.J

Anytime you'd like to talk exhaust, holler.

Better bring some knowledge of entropy, exhaust pulse, noise attenuation, Helmholtz resonators... or you're gonna bore me.

p.s. I own the company. I don't weld or install.

[M4T5]

Anytime you'd like to talk exhaust, holler.

Better bring some knowledge of entropy, exhaust pulse, noise attenuation, Helmholtz resonators... or you're gonna bore me.

p.s. I own the company. I don't weld or install.

I wish you were located in TX, as I need a few things modified on my exhaust kit........

J

[FndMspot]

hello M4T5,Unrelated to the posts above, I enjoy your many posts and ethusiasm about the topics related to our M cars.........could you please remove that tracking software from DANAsoft.com. IMHO, not appropriate for any forum and borders on confidentiality breach.Thanks for you help!Have a good one!

[Mark Linkous]

I actually agree. Is it not enough that 90% of websites are laden with spam and god knows? To be told your ISP, location, etc., is lame.

[M45Caliber]

AZHITMAN -- what's the name of your shop, and where's it located? I'm in Tempe and might drop in sometime.

As for the H pipe; an old timer I used to use would spraypaint about 2 feet of both straight pipes (between the collector tubes and mufflers) , then fire up the car and drive it a few miles. Get back underneath and the paint would be bubbled or burnt in a particular spot -- THAT is where he would weld in the H-Pipe. Apparently that was where the most pressure was building up as defined by the heat pattern. This had the added benfit of making the car sound more like a true V8 and less like two 4-bangers running side by side.

And as AZHITMAN might say (actually maybe not...) doing the above will mitigate exhaust entropy, integrate exhaust pulse, maximize noise attenuation, and hey, I am gonna get me some of them Helmholtz resonators - they come from Germany, right? Man, what a fun topic over a cold brewski - LOL!

[M4T5]

hello M4T5,Unrelated to the posts above, I enjoy your many posts and ethusiasm about the topics related to our M cars.........could you please remove that tracking software from DANAsoft.com. IMHO, not appropriate for any forum and borders on confidentiality breach.Thanks for you help!Have a good one!

It's not a tracking device. It just pings your own pc info at you from your computer. The rest on the sign is fixed to it. No one else nor I can see your info. Only the user of the PC can see it.

J

[szh]

It's not a tracking device. It just pings your own pc info at you from your computer. The rest on the sign is fixed to it.

Correct. The information is available to any web site server that looks at your browser client and extracts the information ... pretty standard stuff. You can make your browser prevent this from being displayed, if you want.

No biggie thing to worry about.

Z

[AZhitman]

AZHITMAN -- what's the name of your shop, and where's it located? I'm in Tempe and might drop in sometime.

As for the H pipe; an old timer I used to use would spraypaint about 2 feet of both straight pipes (between the collector tubes and mufflers) , then fire up the car and drive it a few miles. Get back underneath and the paint would be bubbled or burnt in a particular spot -- THAT is where he would weld in the H-Pipe. Apparently that was where the most pressure was building up as defined by the heat pattern. This had the added benfit of making the car sound more like a true V8 and less like two 4-bangers running side by side.

And as AZHITMAN might say (actually maybe not...) doing the above will mitigate exhaust entropy, integrate exhaust pulse, maximize noise attenuation, and hey, I am gonna get me some of them Helmholtz resonators - they come from Germany, right? Man, what a fun topic over a cold brewski - LOL!

BRM Exhaust. We don't build locally. My office is in the NW Valley.

H-pipes (also referred to as a balance pipe) are archaic and passe, fine for low-rpm engines, and were a concern to balance out pulse collisions due to the one time in the firing order when the system would become overloaded on one side due to competing exhaust pulses.

An X-pipe, a tangentially siamesed crossover, is far more functional for your purposes.

An H pipe does little to nothing for noise. Nor does it affect entropy in the least.

We don't mess with spray paint, we use EGT sensors for testing.

Fun topic for sure. And I like the beer idea.

[GJEMD]

what i did to my M45 to help it "exhale" a little better.

lets all exhale for a minute. There are many different reasons people own a M45. If you constantly drive it like you stole with high rpm cycles through the gears, then helping it exhale might improve the performance. But, if you own this car as a fine luxury car that has wonderful drive ability then keep the exhaust as is. Exhaust back pressure is a component of the torque of the engine, explained as exhaust pulses. The torque of an engine is what gives it drive ability ie initital take off and negotiating traffic without downshifting. I'll bet after this mod your car downshifts more in the 40-60 mph range in traffic than before. just a guess. Many Harley owners learn this lesson when hanging straight pipes. More noise less torque. Lets face it torque, not hp, is what you feel in the seat of your pants with daily driving. Different strokes for diff folks. I think the original concept of this car is more than adequate. Going from 340 hp to 350 hp @ 6000rpm at the expense of torque @ 2000 rpm seems more like not having enough to do.
Modified by GJEMD at 5:51 AM 2/22/2009

[M45Caliber]

WOW - AZHITMAN -- to quote "a tangentially siamesed crossover" !

I had a male colleague from work who lived in the S F Bay Area who dated one for awhile... but that's another topic for another day and another beer - LOL.

I had no idea there was such teminology for the lowly X-pipe! And yeah, the motors I am referencing were all small block, Holley carb'd, push rod V8's, hence the spray paint and H-pipe. I don't think we had sensors back then, and as for sound, there was a noticable difference in the vibratto.

thanks for the science lesson --

[AZhitman]

All good brother - Pics of "siamesed crossovers"?

On second thought... Ugh.

[maxnix]

Dashingmax.....get over it! These cars can be modded! Sorry you want to be boring!

Yeah, crap, who needs an engineering degree, thousands of hours of testing on a dynamometer bed, and enough computing horsepower to send someone to the moon again?

I read about it in a magazine so it must be true!

Pass me the KoolAid!

Anyone can "mod" or even modify a car. Very few even known manufacuterers (like K&N, Vroom Vroom --- Sounds Better!) can demonstrate any actual improvement.

[M4T5]

Yeah, crap, who needs an engineering degree, thousands of hours of testing on a dynamometer bed, and enough computing horsepower to send someone to the moon again?

I read about it in a magazine so it must be true!

Pass me the KoolAid!

Anyone can "mod" or even modify a car. Very few even known manufacuterers (like K&N, Vroom Vroom --- Sounds Better!) can demonstrate any actual improvement.

Your quoting the wrong person about the engineering degree stuff. I never stated that........ Who said anything about a K&N air filter?? I could care less about one of those. I'm not so sure you guys have installed a full aftermarket exhaust system before. They do add MORE HP & TQ! Especially one that removes the OEM cats in place of two high flow cats. These cars were not built perfect...by any means. There are many flaws to be addressed or improved upon on these cars.

J

[ken in az]

Yeah, crap, who needs an engineering degree, thousands of hours of testing on a dynamometer bed, and enough computing horsepower to send someone to the moon again?

Anyone can "mod" or even modify a car. Very few even known manufacuterers (like K&N, Vroom Vroom --- Sounds Better!) can demonstrate any actual improvement.

So, exactly what are you trying to say with these statements? Are you trying to say that the factory has maximized the horsepower and that aftermarket companies can't make any more horsepower with their modifications?

Sounds like you are the one drinking the Kool Aid son!

[M4T5]

I think his koolaid was spiked with the ole good stuff---> Can we say Ever Clear??

J

[notacarlo]

Everclear...

Less back pressure and reduced heat stack can and possibly will send an 02 sensor into a frenzy over time.

[ken in az]

Everclear...

Less back pressure and reduced heat stack can and possibly will send an 02 sensor into a frenzy over time.

OMG - I can't stop laughing!!! lol ahahaaha

How many times has this happened to you or anyone you know? Are you serious?

I seriously can't beleive you just said that, we are all stupider for reading that, I award you no points and may God have mercey on your soul.

hilarious!!!

[notacarlo]

wH

OMG - I can't stop laughing!!! lol ahahaaha

How many times has this happened to you or anyone you know? Are you serious?

I seriously can't beleive you just said that, we are all stupider for reading that, I award you no points and may God have mercey on your soul.

hilarious!!!

What part of my post confuses you Ken? Use big words.

Let's see, Adding a 5" down pipe on my other car sent my lambda lean and messed up my AFR. I had to retune (as the car's ecm was not able to compensate).

[fiveliterbeater]

Everclear...

Less back pressure and reduced heat stack can and possibly will send an 02 sensor into a frenzy over time.

Dude.........what the hell does "reduced heat stack" have to do with cars? i did a google search and if i'm not mistaken, has to do with atmospheric boilers http://www.stanlinenergy.com/4questionstoask.php help me out on this one cause since i've been playing with cars for the past 12 years i've never heard anything of the sort. you own a Grand National so you can't be that crazy; please explain.
Modified by fiveliterbeater at 12:02 PM 2/25/2009

[AZhitman]

wH

What part of my post confuses you Ken? Use big words.

Let's see, Adding a 5" down pipe on my other car sent my lambda lean and messed up my AFR. I had to retune (as the car's ecm was not able to compensate).

A 5" DP, assuming you mean your boosted 3.8, is incredibly unnecessary.

It also is fairly irrelevant to this discussion - Not being nasty, just saying the issues of scavenging and entropy are not the same on a boosted car as the N/A application we're discussing here.

I have an idea of what he's talking about (by "heat stack"), but it really has nothing to do with backpressure - More to do with gas density and accompanying insufficient flow.

[ken in az]

wH

What part of my post confuses you Ken? Use big words.

Let's see, Adding a 5" down pipe on my other car sent my lambda lean and messed up my AFR. I had to retune (as the car's ecm was not able to compensate).

Your O2 sensor didn't die - you increased the airflow without adding more fuel - which caused the lean condition!!

Don't put on a 5" downpipe!
Modified by ken in az at 12:03 PM 2/25/2009

[AZhitman]

Whoa whoa whoa.

He may not have added more airflow.

Remember, the car has a MAF. Unless he somehow exceeded the MAF capacity, then he didn't (to the ECU's thinking) significantly "increase airflow".

I'd need to know what car we're discussing before I start throwing around judgment.