VRUS TB or Renn Headers with 178 pulley???
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W211 E55 AMG
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2015 S212
people have tried it but i doubt there's any measureable benefit. if anything needs to be insulated it's the airbox covers since they're cast aluminum. however, when you insulate anything you also have to consider other aspects. insulation works to keep heat out initially but once heat soaked it does just the opposite...it keeps heat in by preventing the parts to cool properly. so unless you can cool down after every run and don't do any prolonged driving it may help.
there's no magic pill or quick fix for reducing iat's. forget all the goofy little things and put the money towards a quality i/c pump and heat exchanger kit.
there's no magic pill or quick fix for reducing iat's. forget all the goofy little things and put the money towards a quality i/c pump and heat exchanger kit.
It won't help. It looks good. If you wanna help that end, open up the restrictions. Big differentials in pressure from the start of the snorkle to the end.
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Either way, I'd upgrade the cooling with TB or header. I'm going to go the cheap route and just install the marine pump and have it wired to run all the time for now. Then, I'll find one of these custome jobs running around that I like. The budget on it is $2000, so none of the prefabbed kits will do. Worst case, I'll go with the Evosport one.
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2015 S212
The car already runs rich. Adding just a pulley will only help get it into a better sweet spot. More mods (even more air) would finally get the car running lean, so a tune would be needed.
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W211 E55 AMG
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Either way, I'd upgrade the cooling with TB or header. I'm going to go the cheap route and just install the marine pump and have it wired to run all the time for now. Then, I'll find one of these custome jobs running around that I like. The budget on it is $2000, so none of the prefabbed kits will do. Worst case, I'll go with the Evosport one.
Anyone try the CM90 and have pics to show of their install?
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'10 Porsche Turbo PDK, 500e, GL450
headers and cats
you could always look into Supersprint headers and cats. That way there is no cutting for you. Its expensive though but I got to say they look AMAZING. Adam has done a couple already with ZERO check engine lights.
Also I'll disagree with chiro on the headers not making any sound difference. I think they do slightly and even more so if you change out the cats to 100 cells.
I'd do the cooling after Adam does Rocket's car!
Also I'll disagree with chiro on the headers not making any sound difference. I think they do slightly and even more so if you change out the cats to 100 cells.
I'd do the cooling after Adam does Rocket's car!
![Big Grin](https://mbworld.org/forums/images/smilies/biggrin.gif)
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https://mbworld.org/forums/showthrea...78#post2376178
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W211 E55 AMG
Dyno Run This Afternoon
All,
Attached is my first dyno run. Ran it this afternoon in 89.3 Deg F. after an hour+ drive in SF Bay Area traffic getting to the dyno. Tried to cool it down beforehand but probably didn't help all that much. I'm not sure what these other figures mean:
29.6-0.27in Hg.
CF=1.01
Completely stock, no mods what so ever. Probably heavier wheels cuz the stock wheels were chromed. Jangy - 390.8 RWHP seems low? TQ seems higher than average @ 477.3?Anyhow, everyone's thoughts about the run and whatever the two figures above mean are fully welcomed.
Attached is my first dyno run. Ran it this afternoon in 89.3 Deg F. after an hour+ drive in SF Bay Area traffic getting to the dyno. Tried to cool it down beforehand but probably didn't help all that much. I'm not sure what these other figures mean:
29.6-0.27in Hg.
CF=1.01
Completely stock, no mods what so ever. Probably heavier wheels cuz the stock wheels were chromed. Jangy - 390.8 RWHP seems low? TQ seems higher than average @ 477.3?Anyhow, everyone's thoughts about the run and whatever the two figures above mean are fully welcomed.
#40
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All,
Attached is my first dyno run. Ran it this afternoon in 89.3 Deg F. after an hour+ drive in SF Bay Area traffic getting to the dyno. Tried to cool it down beforehand but probably didn't help all that much. I'm not sure what these other figures mean:
29.6-0.27in Hg.
CF=1.01
Completely stock, no mods what so ever. Probably heavier wheels cuz the stock wheels were chromed. Jangy - 390.8 RWHP seems low? TQ seems higher than average @ 477.3?Anyhow, everyone's thoughts about the run and whatever the two figures above mean are fully welcomed.
Attached is my first dyno run. Ran it this afternoon in 89.3 Deg F. after an hour+ drive in SF Bay Area traffic getting to the dyno. Tried to cool it down beforehand but probably didn't help all that much. I'm not sure what these other figures mean:
29.6-0.27in Hg.
CF=1.01
Completely stock, no mods what so ever. Probably heavier wheels cuz the stock wheels were chromed. Jangy - 390.8 RWHP seems low? TQ seems higher than average @ 477.3?Anyhow, everyone's thoughts about the run and whatever the two figures above mean are fully welcomed.
390.8rwhp is typically low for a dynojet...probably because your afr is one of the worst i've seen. even though the operator seems to have shut down well before redline you're already losing power. some may suspect s/c belt slippage, i would also suspect iat's. it could even be a traction issue.
any idea what gear you were in?
Last edited by chiromikey; 09-19-2007 at 12:37 AM.
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W211 E55 AMG
"in hg" is barometric pressure. "cf" is the correction factor used.
390.8rwhp is typically low for a dynojet...probably because your afr is one of the worst i've seen. even though the operator seems to have shut down well before redline you're already losing power. some may suspect s/c belt slippage, i would also suspect iat's. it could even be a traction issue.
any idea what gear you were in?
390.8rwhp is typically low for a dynojet...probably because your afr is one of the worst i've seen. even though the operator seems to have shut down well before redline you're already losing power. some may suspect s/c belt slippage, i would also suspect iat's. it could even be a traction issue.
any idea what gear you were in?
No idea what gear it was in. Adam was there...may be he can shed some light. Adam?
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06 EuroElites E55
that dyno has jacked up air flow readings (i suspect) also im with chriomikey i bet your IATs were up there before you even ran the dyno. PTE has a 160 therostat that will help some untill you decide you wanna coolin kit. dont worrie about the dyno numbers to much they are all different and you cant compair yours to some other machine. use it to gauge your mods.
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that dyno has jacked up air flow readings (i suspect) also im with chriomikey i bet your IATs were up there before you even ran the dyno. PTE has a 160 therostat that will help some untill you decide you wanna coolin kit. dont worrie about the dyno numbers to much they are all different and you cant compair yours to some other machine. use it to gauge your mods.
![drive](https://mbworld.org/forums/images/smilies/driving.gif)
![drive](https://mbworld.org/forums/images/smilies/driving.gif)
![drive](https://mbworld.org/forums/images/smilies/driving.gif)
I hope to get it closer to 475RWHP/555+TQ.
![Big Grin](https://mbworld.org/forums/images/smilies/biggrin.gif)
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Yeap, freaking san jose is always hot! How's arizona weather? Is it very hot out there?
Last edited by AdamG@NorCal; 09-19-2007 at 02:47 AM.
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06 EuroElites E55
i say someone make a sticky sayin your first mod should be a data logger that can at least read/record IATs
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1989 Toyota Tercel EZ - dyno'd @ 70whp/77wtq
I think yours is healthy.... even healthier than mine, except the A/F ![Frown](https://mbworld.org/forums/images/smilies/frown.gif)
391whp, as other mentioned, seemed to be because of the heat. Here are my numbers and some factors that I could remember as comparison.
Temp: Around 75-78*
Car was driven from Adam's place to the dyno place.... according to him, lots of quick bursts and holding at 100+mph for 10-15 sec.
Cooled down for 15 minutes before 1st run & 2 minutes in between runs.
4th gear, dyno mode.... reached top speed at around 5.5-5.6K RPM:
1st run (approx. - give or take 1-2whp/wtq): 417whp/470wtq
2nd run (got the chart
): 407whp/460wtq
3rd run (approx. - give or take 1-2whp/wtq): 395whp/452wtq
So you could see that the heat robbed about 10whp/10wtq every run. And I believe your chart is from 1st run (.001 on file name).
Three distinct things when I compared my chart w/ yours:
- My torque curve is not as flat as yours in low RPM (<2.7K)
- Your HP curve goes down above 5K, while mine still goes up but w/ flatter slope
- Your A/F curve is steeper than mine. Mine is 13.5 (2K-2.2K), 13 (2.2K-3.5K)... until only around 11.75-12 above 5.2K.
So dyno experts out there may be able to chime in.... same place so difference in dyno machine should be minimal, if not non existent.
I'm particularly interested in knowing (hope they're not dumb questions
):
- Why aganzon's A/F is a lot steeper? Does weather really play a major role or something else (i.e. S/C belt, air filter, etc.)?
- Why my torque curve was 20-30 below maximum at low RPM (< 2.7K) unlike aganzon's? Is mine more typical than his? Or is it an indication that my car has too much carbon build-ups or my tranny is less efficient than aganzon's or ...? Adam believes that I don't drive hard enough to minimize carbon build-ups
![Frown](https://mbworld.org/forums/images/smilies/frown.gif)
391whp, as other mentioned, seemed to be because of the heat. Here are my numbers and some factors that I could remember as comparison.
Temp: Around 75-78*
Car was driven from Adam's place to the dyno place.... according to him, lots of quick bursts and holding at 100+mph for 10-15 sec.
Cooled down for 15 minutes before 1st run & 2 minutes in between runs.
4th gear, dyno mode.... reached top speed at around 5.5-5.6K RPM:
1st run (approx. - give or take 1-2whp/wtq): 417whp/470wtq
2nd run (got the chart
![Big Grin](https://mbworld.org/forums/images/smilies/biggrin.gif)
3rd run (approx. - give or take 1-2whp/wtq): 395whp/452wtq
So you could see that the heat robbed about 10whp/10wtq every run. And I believe your chart is from 1st run (.001 on file name).
Three distinct things when I compared my chart w/ yours:
- My torque curve is not as flat as yours in low RPM (<2.7K)
- Your HP curve goes down above 5K, while mine still goes up but w/ flatter slope
- Your A/F curve is steeper than mine. Mine is 13.5 (2K-2.2K), 13 (2.2K-3.5K)... until only around 11.75-12 above 5.2K.
So dyno experts out there may be able to chime in.... same place so difference in dyno machine should be minimal, if not non existent.
I'm particularly interested in knowing (hope they're not dumb questions
![Big Grin](https://mbworld.org/forums/images/smilies/biggrin.gif)
- Why aganzon's A/F is a lot steeper? Does weather really play a major role or something else (i.e. S/C belt, air filter, etc.)?
- Why my torque curve was 20-30 below maximum at low RPM (< 2.7K) unlike aganzon's? Is mine more typical than his? Or is it an indication that my car has too much carbon build-ups or my tranny is less efficient than aganzon's or ...? Adam believes that I don't drive hard enough to minimize carbon build-ups
![nix](https://mbworld.org/forums/images/smilies/nixweiss.gif)
![Big Grin](https://mbworld.org/forums/images/smilies/biggrin.gif)
![hammer](https://mbworld.org/forums/images/smilies/bonk.gif)
#50
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2015 S212
The 390 is a bit low. I expect anywhere from 406 to 420 on a stock E55. Weight from chrome is nothing. The IATs are HUGE. Especially if the car sat before or if the dyno shop didn't have nice ventilation.
RennTech Headers, huh? GGGGrrrrr!!
RennTech Headers, huh? GGGGrrrrr!!