Real world hp gains with 86mm Pulley, tune and headers?
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BMW M3 E90 / BMW E39 M5 /BMW E46 M3 / E55 AMG W211
Real world hp gains with 76mm Pulley, tune and headers?
I was wondering if any one you did some sort of before and after test that shows real world hp gains with a 76mm VRP pulley and tune along with a set of Eurocharged headers ?
This is basically what I did on mine so far and the nearest Dyno is about 5 hours away....
edit: it is 76mm, not 86.
This is basically what I did on mine so far and the nearest Dyno is about 5 hours away....
edit: it is 76mm, not 86.
Last edited by lockeed; 05-05-2018 at 08:45 AM.
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2005 E55 AMG, 1991 MR2
Did you try the butt dyno? An 83mm and tune only registered a substantial difference to mine. Numbers are nice, I am pretty sure there are dynos floating around of these (again assuming you mean 76mm as I haven't heard of an 86) but they are only numbers. And it doesn't mean that you got the same increases with the same mods either, there are a huge amount of variables. The only meaningful thing is to do a baseline on your own car, then re-dyno after the mods. Or 1/2 mile times, or some sort of other acceleration test you standardise for yourself. Something you can test without driving 5 hours if you have somewhere long and straight to do this.
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Published numbers are +50-55 for the tune and 76 pulley, and about +30-40 for the headers. While staying conservative, car should have 550 crank +/- in principle.
Im debating weather on not I should go with a larger TB and larger cooler as well... would that give any significant increase in hp or it would barely be noticable? Having the larger tb makes be wonder about drivability... heard some negative things.
Im debating weather on not I should go with a larger TB and larger cooler as well... would that give any significant increase in hp or it would barely be noticable? Having the larger tb makes be wonder about drivability... heard some negative things.
Last edited by lockeed; 05-05-2018 at 08:45 AM.
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2005 E55 AMG, 1991 MR2
Cooling is good. Read through all the TB threads, some are a few pages. I would never even attempt one after reading those but decide what works for you. Some people have it working perfectly with minimal fuss. Others had months of issues and never resolved it. I can't find it now but I thought I saw someone dyno a 10HP gain on a fully modded car between the stock and aftermarket TB's.
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#8
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Finally found it https://mbworld.org/forums/w211-amg/...06-issues.html this thread sealed the deal for me.
#10
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I was wondering if any one you did some sort of before and after test that shows real world hp gains with a 76mm VRP pulley and tune along with a set of Eurocharged headers ?
This is basically what I did on mine so far and the nearest Dyno is about 5 hours away....
edit: it is 76mm, not 86.
This is basically what I did on mine so far and the nearest Dyno is about 5 hours away....
edit: it is 76mm, not 86.
#11
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Finally found it https://mbworld.org/forums/w211-amg/...06-issues.html this thread sealed the deal for me.
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drothgeb (05-07-2018)
#12
Good tip thanks. Did you have him do the shaft grind also or did you do it yourself? (I have done mine but I was not near as aggressive as I could be, scared of messing it up) What did he end up charging for the work?
#13
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i did the shaft im sure he would if u asked but it was 120 all said n done
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#16
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Published numbers are +50-55 for the tune and 76 pulley, and about +30-40 for the headers. While staying conservative, car should have 550 crank +/- in principle.
Im debating weather on not I should go with a larger TB and larger cooler as well... would that give any significant increase in hp or it would barely be noticable? Having the larger tb makes be wonder about drivability... heard some negative things.
Im debating weather on not I should go with a larger TB and larger cooler as well... would that give any significant increase in hp or it would barely be noticable? Having the larger tb makes be wonder about drivability... heard some negative things.
#17
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The throttlebody threads make it seem like they are a gamble. But with our bolt on plate we have so few issues its almost non existant. Less than 5% of the throttlebody kits we sell we hear the customer is having an issue with hiccup or lean spike. Its typically traced back to a leak and when no leak is found, they can be fixed in the tune.
#18
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The throttlebody threads make it seem like they are a gamble. But with our bolt on plate we have so few issues its almost non existant. Less than 5% of the throttlebody kits we sell we hear the customer is having an issue with hiccup or lean spike. Its typically traced back to a leak and when no leak is found, they can be fixed in the tune.
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GM_Lover (05-13-2018)
#19
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You might say favourite mod being a seller of such a mod but unless you can
-provide unbiased evidence that it results in significantly more gains than has been shown on back to back dyno in the link above
-and explain why some of the most knowledgeable and talented owners here still can't get it to operate smoothly
Then that is a misleading statement. I am usually a cynic sure, but I actually want this mod to work perfectly every time and produce the stated HP so I can do it myself.
-provide unbiased evidence that it results in significantly more gains than has been shown on back to back dyno in the link above
-and explain why some of the most knowledgeable and talented owners here still can't get it to operate smoothly
Then that is a misleading statement. I am usually a cynic sure, but I actually want this mod to work perfectly every time and produce the stated HP so I can do it myself.
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GM_Lover (05-13-2018)
#20
This. With an 83, larger heat exchanger, and China long tubes, my IATs can easily hit 130+ F on an 80 F day by the end of my first pass in the 1/4-mile. Pretty confident I'd be slower if I just pulley'd down without adding some significant cooling mods (ie; trunk tank + wmi). As it is, with my listed mods + shelf EC tune, the car runs extremely consistent 11.9's @ 121-122 mph (60-70 F ambient @ 300 ft above sea level). This is on 100% summer street tires cutting 2.0 60 fts. 93 octane gas. Depending on what bone stock traps you believe (anywhere from 113 to 116 mph), that's a good bit of extra power considering we're talking about a 4k lb sled. With proper cooling mods + 76 pulley, I can see 125 mph traps being within reach.
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Legit street cars just posted a video of how he got his car to adapt and tolerate the 82mm throttlebody
Check it out.
Check it out.
Last edited by VictoryRoadPerformance; 05-13-2018 at 04:19 PM.
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Legit street cars just posted a video of how he got his car to adapt and tolerate the 82mm pulley.
https://www.youtube.com/watch?v=TgmjBEBO8P8&t=210s
Check it out.
https://www.youtube.com/watch?v=TgmjBEBO8P8&t=210s
Check it out.
#23
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Not to mention this is not the same problem that alot of us are having. My 82mm worked amazing ... powerful .... flawless round town an wot. The lean problems i had were under light throttle on freeway an out of nowhere hiccup n lean mode til i cycled the key.
now i had replaced every single gasket, copper sprayed, and even siliconed some of them, replaced every hose and even epoxy filled the plastic plug on the back to be sure. I had it smoke tested at 3 different places with no leaks being found. Not to mentioni simply removed the 82mm and adapter an put the 74mm stocker back on with the old gasket an hiccup an problem free for monthes now so if i had an air leak it woulda shown with the 74 as well as the 82.
now i had replaced every single gasket, copper sprayed, and even siliconed some of them, replaced every hose and even epoxy filled the plastic plug on the back to be sure. I had it smoke tested at 3 different places with no leaks being found. Not to mentioni simply removed the 82mm and adapter an put the 74mm stocker back on with the old gasket an hiccup an problem free for monthes now so if i had an air leak it woulda shown with the 74 as well as the 82.