Bolt on performance parts?
#31
03-18-2007, 08:21 AM
Re: Bolt on performance parts?
It sounds like jdp72 will not have a problem knowing when the ICE shuts on and off now. I'm wondering if driving through a parking lot in EV will scare someone as he stops to let someone cross in front of him and the ICE restarts. I had a problem once when I was driving my '67 GT 500 sitting at a stoplight on a slight hill. I was using the clutch and the gas to hold the Shelby from rolling back into the car behind me. As I gave it a little gas, the woman behind me heard the sound and thought I was taking off. She hit her gas pedal and rammed into the back of my car real hard. Luckly my foot was not on the brake because she knocked me forward which absorbed some of the energy.
GaryG
#32
03-18-2007, 02:46 PM
Re: Bolt on performance parts?
I had a problem once when I was driving my '67 GT 500 sitting at a stoplight on a slight hill. I was using the clutch and the gas to hold the Shelby from rolling back into the car behind me. As I gave it a little gas, the woman behind me heard the sound and thought I was taking off. She hit her gas pedal and rammed into the back of my car real hard.
GaryG
GaryG
~John
#33
04-04-2007, 08:33 AM
Re: Bolt on performance parts?
Clif:
Ok weather finally warmed up and it's installed. The exhaust was made for a FEH, and had I had a FEH it would have gone smoothly at just over 1 hour to install. The just loosened a few bolts, and had to take the passenger rear tire off to get the exhaust on. The MagnaFlow instructions said you had to cut the stock exhaust to get it off, but it's completely unnecessary.
Anyways, I install the MagnaFlow made for the FEH and everything goes smoothly EXCEPT that the tailpipe exits in the wrong area...and does not come out of the stock notched area in the bumper for my MMH. It looked like crap, and plus it rubbed on the bottom of my bumper and the heat would have just melted the bumper. Took it to a local custom exhaust place that has done work for me before and he just heated the stainless steel exhaust tube and bent it the 10-15 degrees necessary to make it come out of the right area. Now it looks really good, only at really close inspection would you notice that things are slightly off center and the drain hole out of the back of the exhaust is not dead center (I'll upload pictures later).
Ok, I've been driving it around all day...and here is what I noticed. The cabin noise is significantly louder, which I expected. Much less noisy than the F-150 and Mustang, and no where near the loudness of my Harley...but compared to stock it was definitely louder. The seat in the pants pickup is pretty much the same as stock. The differences are my mpg definitely has gone up 1-3mpg, and the engine definitely runs at lower RPM's going up hills and around town.
I'll give updates as I have more time driving with it, and the weather warms up. Things seem good, although I probably would not have done it since my main purpose was to see increased seat in pants pickup, and not necessarily mpg gains (although that is always appreciated)...plus it wasn't an exact fit for my MMH (since they don't make one for the MMH). Not sure how many years it would take to see the Return On Investment on a $400 exhaust just to see 1-3 mpg gains...
Actually thinking back I think the Gibson might have worked out better. I think it's quieter, and the exhaust comes out of the side behind the rear tire (not the stock location). The reason why I picked the MagnaFlow was because I saw this HUGE kinked bend in the Gibson, and the MagnaFlow appeared to be straighter...come to find out the MagnaFlow had the same big bend, just the angle of the picture (maybe intentional) made it look like less of a bend. Oh well live and learn. Anyone with a MMH, do NOT buy the MagnaFlow...I think the Gibson is the one to go with. I'll report back later.
Ok weather finally warmed up and it's installed. The exhaust was made for a FEH, and had I had a FEH it would have gone smoothly at just over 1 hour to install. The just loosened a few bolts, and had to take the passenger rear tire off to get the exhaust on. The MagnaFlow instructions said you had to cut the stock exhaust to get it off, but it's completely unnecessary.
Anyways, I install the MagnaFlow made for the FEH and everything goes smoothly EXCEPT that the tailpipe exits in the wrong area...and does not come out of the stock notched area in the bumper for my MMH. It looked like crap, and plus it rubbed on the bottom of my bumper and the heat would have just melted the bumper. Took it to a local custom exhaust place that has done work for me before and he just heated the stainless steel exhaust tube and bent it the 10-15 degrees necessary to make it come out of the right area. Now it looks really good, only at really close inspection would you notice that things are slightly off center and the drain hole out of the back of the exhaust is not dead center (I'll upload pictures later).
Ok, I've been driving it around all day...and here is what I noticed. The cabin noise is significantly louder, which I expected. Much less noisy than the F-150 and Mustang, and no where near the loudness of my Harley...but compared to stock it was definitely louder. The seat in the pants pickup is pretty much the same as stock. The differences are my mpg definitely has gone up 1-3mpg, and the engine definitely runs at lower RPM's going up hills and around town.
I'll give updates as I have more time driving with it, and the weather warms up. Things seem good, although I probably would not have done it since my main purpose was to see increased seat in pants pickup, and not necessarily mpg gains (although that is always appreciated)...plus it wasn't an exact fit for my MMH (since they don't make one for the MMH). Not sure how many years it would take to see the Return On Investment on a $400 exhaust just to see 1-3 mpg gains...
Actually thinking back I think the Gibson might have worked out better. I think it's quieter, and the exhaust comes out of the side behind the rear tire (not the stock location). The reason why I picked the MagnaFlow was because I saw this HUGE kinked bend in the Gibson, and the MagnaFlow appeared to be straighter...come to find out the MagnaFlow had the same big bend, just the angle of the picture (maybe intentional) made it look like less of a bend. Oh well live and learn. Anyone with a MMH, do NOT buy the MagnaFlow...I think the Gibson is the one to go with. I'll report back later.
Clif
#34
04-07-2007, 04:16 PM
Re: Bolt on performance parts?
It's hard to quantify the benefits of the exhaust, but doing it all over again I would not buy the MagnaFlow, and wished I had gone with the Gibson. Anyways, the weather here in Chicago has been 70 one day and below freezing the next and the MPG seem to be fluctuating more with that than anything else.
I definitely experience better MPG, and at highway speeds is when the high flowing exhaust would really shine. Before the exhaust I never had my MMH over 100 mph, and it would really struggle to get up that fast. The RPM's would shoot up a lot faster with the exhaust, so much so that if I floored it the RPM's would go past the redline and deep into the RED...that sort of scares me a little, and I don't ever recall being able to do with any automatic transmission I've had before.
I probably should have disconnected the battery when I swapped the exhaust because you could see from the MPG graph it would SPIKE up and down as it was learning, and would look like a crown...it would get smoother over time, but never quite as smooth as when the stock exhaust was on. My major complaint is the highway exhaust DRONE that would really, really annoy me and my wife, so much so that I put the stock resonator back on...so now I've got a frankenstein system.
What I found out, and what is really annoying me, is that on the MagnaFlow website it says it's 2.5" piping, but that is only in the muffler itself, the rest is 2.25" piping. So basically from the cat back it goes 2.5" in the muffler, then 2.25" a foot before the stock resonator, and then down to 2" (which is the stock size) before the resonator until the tailpipe. Kind of a goofy setup, but the DRONE is gone. I wasn't sure if the stock resonator would do anything, but it did. Driving it around today, the exhaust noise is nearly stock-like...a little deeper tone, but I actually like that. On the highway I am still able to hit high speeds like before.
Basically here is what you can learn from me, and save some money. Keep all the stock components, and just spend like $150 on a high flow Gibson exhaust. Have a muffler shop cut out out the stock muffler and install the Gibson replacement and enjoy... It's a heck of a lot simplier and easier than what I did...and the ROI on the increased MPG may be recovered on $150, where as I will probably never see the return on the nearly $400 I spent.
I think I am done messing with my MMH for now, and I'll just concentrate on aestheic stuff from this point on...probably just a nerf bar and some other stuff.
I definitely experience better MPG, and at highway speeds is when the high flowing exhaust would really shine. Before the exhaust I never had my MMH over 100 mph, and it would really struggle to get up that fast. The RPM's would shoot up a lot faster with the exhaust, so much so that if I floored it the RPM's would go past the redline and deep into the RED...that sort of scares me a little, and I don't ever recall being able to do with any automatic transmission I've had before.
I probably should have disconnected the battery when I swapped the exhaust because you could see from the MPG graph it would SPIKE up and down as it was learning, and would look like a crown...it would get smoother over time, but never quite as smooth as when the stock exhaust was on. My major complaint is the highway exhaust DRONE that would really, really annoy me and my wife, so much so that I put the stock resonator back on...so now I've got a frankenstein system.
What I found out, and what is really annoying me, is that on the MagnaFlow website it says it's 2.5" piping, but that is only in the muffler itself, the rest is 2.25" piping. So basically from the cat back it goes 2.5" in the muffler, then 2.25" a foot before the stock resonator, and then down to 2" (which is the stock size) before the resonator until the tailpipe. Kind of a goofy setup, but the DRONE is gone. I wasn't sure if the stock resonator would do anything, but it did. Driving it around today, the exhaust noise is nearly stock-like...a little deeper tone, but I actually like that. On the highway I am still able to hit high speeds like before.
Basically here is what you can learn from me, and save some money. Keep all the stock components, and just spend like $150 on a high flow Gibson exhaust. Have a muffler shop cut out out the stock muffler and install the Gibson replacement and enjoy... It's a heck of a lot simplier and easier than what I did...and the ROI on the increased MPG may be recovered on $150, where as I will probably never see the return on the nearly $400 I spent.
I think I am done messing with my MMH for now, and I'll just concentrate on aestheic stuff from this point on...probably just a nerf bar and some other stuff.
#36
04-27-2007, 03:02 PM
Re: Bolt on performance parts?
A dry sump kit would be a nice addition to a hybrid. It makes the ICE more efficient and raises the horsepower. If the kit used electric oil pumps, it could establish oil pressure before starting the ICE. That always worries me with the hybrid because the ICE starts a lot more than with non-hybrids.
#37
04-27-2007, 09:30 PM
Re: Bolt on performance parts?
A dry sump kit would be a nice addition to a hybrid. It makes the ICE more efficient and raises the horsepower. If the kit used electric oil pumps, it could establish oil pressure before starting the ICE. That always worries me with the hybrid because the ICE starts a lot more than with non-hybrids.
#38
04-28-2007, 05:19 AM
Re: Bolt on performance parts?
I understand the oil drain from the bearings surfaces very fast when the engine is warm. And that synthetic oils drain from the bearings faster than petrolium oils.
Any thoughts on the performance/energy saving potential? I know the benefit is not as great at low to moderate RPM.
Any thoughts on the performance/energy saving potential? I know the benefit is not as great at low to moderate RPM.
#39
04-28-2007, 08:41 AM
Re: Bolt on performance parts?
I understand the oil drain from the bearings surfaces very fast when the engine is warm. And that synthetic oils drain from the bearings faster than petrolium oils.
Any thoughts on the performance/energy saving potential? I know the benefit is not as great at low to moderate RPM.
Any thoughts on the performance/energy saving potential? I know the benefit is not as great at low to moderate RPM.
A thin film will cling to the surface for quite some time and thats what you need. I'm not worried about the engine restarting all the time. Its designed for it.
Not that the dry sump kit would hurt anything.
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