Big throttle body. Reliable?
Thread Starter
Junior Member
Joined: May 2017
Posts: 28
Likes: 3
From: So cal
G65, A217 65 AMG, 993TT
Big throttle body. Reliable?
Hello from So Cal. All information is really appreciated.
Is there a 100% trouble free swap available? 90mm, 82mm? Or is the general consensus still a crap shoot? I own a few shops in So Cal, so my best tech would do the work, that eliminates any chance of mistake. I'd like to pull the trigger on this as it seems to be a bottleneck. I have MBH LTH's, meth (not tuned for it), and an 83mm pulley. I put down 520 whp and 530 ft lbs. Next up would be CNC ported heads and a cam, but I need to get air in to maximize the mod.
Thank you,
J
Is there a 100% trouble free swap available? 90mm, 82mm? Or is the general consensus still a crap shoot? I own a few shops in So Cal, so my best tech would do the work, that eliminates any chance of mistake. I'd like to pull the trigger on this as it seems to be a bottleneck. I have MBH LTH's, meth (not tuned for it), and an 83mm pulley. I put down 520 whp and 530 ft lbs. Next up would be CNC ported heads and a cam, but I need to get air in to maximize the mod.
Thank you,
J
Hello from So Cal. All information is really appreciated.
Is there a 100% trouble free swap available? 90mm, 82mm? Or is the general consensus still a crap shoot? I own a few shops in So Cal, so my best tech would do the work, that eliminates any chance of mistake. I'd like to pull the trigger on this as it seems to be a bottleneck. I have MBH LTH's, meth (not tuned for it), and an 83mm pulley. I put down 520 whp and 530 ft lbs. Next up would be CNC ported heads and a cam, but I need to get air in to maximize the mod.
Thank you,
J
Is there a 100% trouble free swap available? 90mm, 82mm? Or is the general consensus still a crap shoot? I own a few shops in So Cal, so my best tech would do the work, that eliminates any chance of mistake. I'd like to pull the trigger on this as it seems to be a bottleneck. I have MBH LTH's, meth (not tuned for it), and an 83mm pulley. I put down 520 whp and 530 ft lbs. Next up would be CNC ported heads and a cam, but I need to get air in to maximize the mod.
Thank you,
J
I want to get to like 500 whp.
Thread Starter
Junior Member
Joined: May 2017
Posts: 28
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From: So cal
G65, A217 65 AMG, 993TT
long tubes and a dyno tune should net you 80hp. 500 is very easy imo
Im going to world motor sports in Torrance this week to run on the wind tunnel dyno, I bet I make more power.
Id really like to get the throttle body issue figured out, it seems ridiculous that this is still an issue after all these years.
Last edited by Werkstatt310; Nov 13, 2019 at 01:44 AM.
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From: New Zealand
There are a few old threads about the aftermarket pulleys failing prematurely. It's odd as in a lot of cases the bearings were high quality Japanese ones. I got the 3 piece set but oem small idler and tensioner. The prices seem to be a bit better on the supercharger idler pulleys than what they used to be.
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Thread Starter
Junior Member
Joined: May 2017
Posts: 28
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From: So cal
G65, A217 65 AMG, 993TT
Absolutely. Every vendor says it’s nachi or nsk, but it’s not. And if it is, it’s bottom of the barrel abec 1. I forgot to mention in my mod list that I have a bwk as well. I pressed out the junk bearing and pressed in a timken abec 5 grade set. All the other pulleys, double roller, tensioner etc were replaced with OE mb parts. I use nachi and nsk along with other brands on a daily basis, none fail in 3k miles. I sell millions of dollars in parts a year, so I know what makes sense and what doesn’t. My supplier provides me with warranty data on a monthly basis, this part number was warrantied 12 times and sold 856 etc.
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From: Colorado, USA
E55 C63
HDtuning. He knows what he’s doing. I wanted a conservative tune as well, he said we could get more aggressive if I wanted to. Car still isn’t 100%, exhaust leak etc. This was on a hot so cal day last month, 95 degrees, with the ac on, and the belt was slipping. We realized the ac was on and kicked it off, made another pull and the sc belt jumped at 5500 rpm. I’m replacing all pulleys, tried the aftermarket ones and the bearings are shot on all of them after 3k miles, going back to new stock. I think I’m going to get a 76mm pulley and see how I do.
long tubes and a dyno tune should net you 80hp. 500 is very easy imo
Im going to world motor sports in Torrance this week to run on the wind tunnel dyno, I bet I make more power.
Id really like to get the throttle body issue figured out, it seems ridiculous that this is still an issue after all these years.
long tubes and a dyno tune should net you 80hp. 500 is very easy imo
Im going to world motor sports in Torrance this week to run on the wind tunnel dyno, I bet I make more power.
Id really like to get the throttle body issue figured out, it seems ridiculous that this is still an issue after all these years.
Throttlebodies are not an issue when installed correctly.
There are acctually less issues with 90-92 TBs then 82mm., Our 85mm are fully rebuilt and modified 82mms.
Thread Starter
Junior Member
Joined: May 2017
Posts: 28
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From: So cal
G65, A217 65 AMG, 993TT
How would one go about installing a 90-92 TB and not have issues, if I can guarantee a perfect install, what would the variable be?
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From: OC, CA
2006 E55
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CLS55 AMG
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From: OC, CA
2006 E55
That is in the ball park of what the 83mm pulley and real long tubes can do. My car made 506hp/540tq with the 83mm, American Racing headers, and tune. I've recently added an 82mm throttle body and now it is making 537hp/550tq. Build thread here: https://mbworld.org/forums/w219/7351...-new-post.html
real LTH? ARH get more hp gains than cheap Chinese one?
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CLS55 AMG
Someone would have to pay to do the back to back test on that one but my guess is that they probably do make more power. The primaries are much longer and I *think* larger diameter with a real nice merge collector down low not to mention they include a nice xpipe as well. Mine may not make as much as 100% open headers since I had the 200 cell cats added to my order.
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From: New Zealand
Some people are skeptical on the gains you get from even just an 80mm throttle body. Is there really anything worthwhile to again between 80, 82, 90 and 92mm? Unfortunately the combining of mods makes a lot of dyno runs impossible to interpret.
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CLS55 AMG
With ONLY changing the throttle body I picked up ~27hp peak but the dyno curve speaks volumes more to the gains than just a peak number.
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CLS55 AMG
And in full transparency I now have about 212 miles since the TB upgrade and got my first P0106 code on the way home today. I didn't feel any sort of hiccup, just saw the CEL come on. I cleared the code so I may wait till traffic dies down a bit to try and see if I can replicate it. The Y-pipe was a little loose I noticed so I might have to see if I can get the connection to the TB tighter.
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From: New Zealand
Sorry I was under the impression that was combined with dyno tuning. The only other evidence I have seen was 10hp gain on a dyno back to back.
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CLS55 AMG
Well you have to do some sort of ECU flash when doing the throttle body. I just had them spend some more time doing the tuning. The real interesting thing moreso than the peak horsepower is how the shape of the torque and horsepower curves changed. At least on my car, the engine seems to be breathing all the way to redline now instead of dropping off near 6k like all the other charts I've seen posted.
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From: new ringgold pa
99 ford lightning
That is about what it should make i would imagine when adding boost. My car on stock pulley is always in the 490s to the wheels and torque 520s on my dynojet. And it makes 461 to the wheels on a dyno dynamics. Plus it traps what it traps despite some shifting problems. i may try a 83mm pulley myself someday.
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2005 e55 AMG
The 80mm with the shaft grind picked up exactly 1lb of boost for me, pulled much harder up top and I did have to do the throttle body adaptation stuff in order to get it to drive correctly recommended by Hulk. Took a couple times and a good drive cycle but for sure if it is driven exactly in the sweet spot with very light throtlle you will feel a little throttle close or hesitation but only I can tell and it has to be driven "right there" to notice Anyone else driving will never notice it.Then there are days when it is there 1 out of 10 times so it is no bother to me with drivability.
