what's the verdict on the LET Motorsports SRT6 Headers ?
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
Originally Posted by m3pig
Heading to the dyno next Friday for before numbers..........LET Headers being installed afterwards and dyno to follow
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
Ok so 230 ordered VRP headers and m3pig ordered LET headers. There better be some before and after dyno numbers or trap speed numbers from both of you, or I will find you!
Ok just kidding but it would be nice I'm very curious
Ok just kidding but it would be nice I'm very curious
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
Cal_Cobra, as far as not seeing much improvement on exhaust check my thread i built an exhaust that netted 15hp and 20tq with gains throughout the entire band.
IMO everyone who has built/bought headers to date for the m112 is missing the most crucial part of the header design to pick up power over the stock exhaust manifolds. I plan to remedy this.
IMO everyone who has built/bought headers to date for the m112 is missing the most crucial part of the header design to pick up power over the stock exhaust manifolds. I plan to remedy this.
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
Originally Posted by Cal_Cobra
All depends on the headers and the application. I used to be into the Mustang world (both the 1960's models and the later 5.0 models) and there was a variety of headers that could either develop low end torque or high end power (or both), depending on what you were trying to accomplish, how your engine was setup as well as the rest of the exhaust system. The Fox bodied 5.0 Mustangs actually came with tubular headers from the factory, but they were poorly made/mass produced headers (still better then your average cast iron exhaust manifold IMHO), and one could easily pick up a fair amount of power just by removing them, and cleaning up all their crappy welds, port matching the flanges, etc.
Then I bought a Viper (still have it, although it languishes in the garage mostly
) and put on a set of unequal length ceramic coated headers and they brought up both the low end and top end (not that the bottom end needed anything IMHO). I also pulled the highly restrictive factory cats, and installed a 3" exhaust. The improvement was amazing to say the least.
Unfortunately the advert for the LET headers say absolutely nothing other then "Click here to pay $975 for these SRT headers"
so we really don't know what they do aside from soak up your wallet 
Seriously it would be nice for them to post a little info on what they tried to achieve with their specific header design, some dyno data to back up their claim, etc.
Although I'm new to the SRT world, the exhaust seems to be tabo, as I don't see a lot of good data on exhaust upgrades. I've read that the Benz exhaust is fairly decent stock, but being that your trying to pump as much air through the SRT engine as possible, surely there are gains to be made by logical exhaust mods, unless Benz did such a great job of engineering it that any changes are minimal (which would be difficult to believe, but possible I suppose).
Just my 50 cents worth (accounting for inflation and all).
Brian
Then I bought a Viper (still have it, although it languishes in the garage mostly
) and put on a set of unequal length ceramic coated headers and they brought up both the low end and top end (not that the bottom end needed anything IMHO). I also pulled the highly restrictive factory cats, and installed a 3" exhaust. The improvement was amazing to say the least.Unfortunately the advert for the LET headers say absolutely nothing other then "Click here to pay $975 for these SRT headers"
so we really don't know what they do aside from soak up your wallet Seriously it would be nice for them to post a little info on what they tried to achieve with their specific header design, some dyno data to back up their claim, etc.
Although I'm new to the SRT world, the exhaust seems to be tabo, as I don't see a lot of good data on exhaust upgrades. I've read that the Benz exhaust is fairly decent stock, but being that your trying to pump as much air through the SRT engine as possible, surely there are gains to be made by logical exhaust mods, unless Benz did such a great job of engineering it that any changes are minimal (which would be difficult to believe, but possible I suppose).
Just my 50 cents worth (accounting for inflation and all).
Brian
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
Originally Posted by msheredy
That's assuming you install a set of headers with primaries that are too large. A properly designed header will always out perform an OEM manifold no matter what you are going after, 0-60, top speed etc.
A good example is Diamond eye down pipes for diesel trucks. They claim faster spooling and more power they do make more power but at redline not really much of a point to that because you ain't holding reline very long unless your sled pulling and even then, not real long.
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
Originally Posted by Bulldogger
I own a 2002 RT10 with 2100 miles. Headers even with a Roe supercharger gain very little and its all at the upper end. High flow Cat's and a set of billy boats yield better results
What headers are you running ? I'm also running a full billy boat exhaust, sans cats.
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From: Batavia, IL
Re: what's the verdict on the LET Motorsports SRT6 Headers ?
Originally Posted by 240M3SRT
Are you refering to "redline" brand oil or the rev limiter? Im trying to understand what your saying.
And id like to know the mods too, i pmd the guy before purchasing my headers and he just said he had some cooling mods done.
And id like to know the mods too, i pmd the guy before purchasing my headers and he just said he had some cooling mods done.
what the F are you talking about??? lol there are pictures of a custom metal cai on the slk32 its basically 2 needswings put together and that gave the slk32 some serious power. they did the final test for the headers with the cai being installed for the first time. so its mainly the cai that gave the power
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
CU, pulley, cams, upgraded intercooler with remote reservoir (two pumps), intake, headers, custom exhaust, LSD, brakes, wheels, springs, shocks, cosmetic stuff (grill, antenna, roll bars, wood trim), oil catch can. I think that is pretty much it
thats what was done to the car before the headers
thats what was done to the car before the headers
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
https://www.crossfireforum.org/forum...hlight=headers
doing a search helps. this is where our forum talked about it, if you want to know what merc guys said click on the link in that link
doing a search helps. this is where our forum talked about it, if you want to know what merc guys said click on the link in that link
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
Originally Posted by Voyager
https://www.crossfireforum.org/forum...hlight=headers
doing a search helps. this is where our forum talked about it, if you want to know what merc guys said click on the link in that link
doing a search helps. this is where our forum talked about it, if you want to know what merc guys said click on the link in that link
thats the cai that was installed for the final run. thats what netted the big power
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
I have the LET headers installed and I love them. They are well built and according to the dyno help me put down around 380tq. Eric @ LET has the Dyno sheets. We did this long with a tune and a 181, AMG 55 intakes and LET HE.
My power comes on and says on and plants you deep into the RPM range.
Jerry or Eric, do you have the Dyno sheet?
My power comes on and says on and plants you deep into the RPM range.
Jerry or Eric, do you have the Dyno sheet?
Re: what's the verdict on the LET Motorsports SRT6 Headers ?
"I have the LET headers installed and I love them. They are well built and according to the dyno help me put down around 380tq. Eric @ LET has the Dyno sheets. We did this long with a tune and a 181, AMG 55 intakes and LET HE.
My power comes on and says on and plants you deep into the RPM range.
Jerry or Eric, do you have the Dyno sheet?"
What is the point of the dyno sheet? We want to know what the LET headers do without the other mods. Can you show us a dyno showing before and after headers? If not then there is no point. I am glad and envious of your power gains. Good job setting the standards.
My power comes on and says on and plants you deep into the RPM range.
Jerry or Eric, do you have the Dyno sheet?"
What is the point of the dyno sheet? We want to know what the LET headers do without the other mods. Can you show us a dyno showing before and after headers? If not then there is no point. I am glad and envious of your power gains. Good job setting the standards.
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
That is why I put it in my message, I don't have the gains of just the headers but I'm very happy with the total results and think the quality is there. I'm hoping LET can shed some light on Tq gains for everyone.
So that is my message, I'm happy with LET's quality.
IMO, headers should be your last mod considering the gains from the 181 and 185 and the LET tune.
So that is my message, I'm happy with LET's quality.
IMO, headers should be your last mod considering the gains from the 181 and 185 and the LET tune.
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
Its like no one gets it. Im amazed no one has noticed.
The problem is the 1.75" output flanges. Good luck flowing 400hp through them w/o nitrous.
Ill be the first to hack em off and run something larger. If im wrong you can all laugh at me for wasting time and $.
If im right remember it was my idea and i was the first to do it. Yes i feel special...lol
The problem is the 1.75" output flanges. Good luck flowing 400hp through them w/o nitrous.
Ill be the first to hack em off and run something larger. If im wrong you can all laugh at me for wasting time and $.
If im right remember it was my idea and i was the first to do it. Yes i feel special...lol
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From: Houston
Re: what's the verdict on the LET Motorsports SRT6 Headers ?
Originally Posted by 240M3SRT
Are you refering to "redline" brand oil or the rev limiter? Im trying to understand what your saying.
http://www.mbworld.org/forums/showpo...0&postcount=80
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
oooooohhh yeah illegal now i understand 240s question yes illegal was right i am referring to the color of the line on the dyno graph
Re: what's the verdict on the LET Motorsports SRT6 Headers ?
Originally Posted by 240M3SRT
Its like no one gets it. Im amazed no one has noticed.
The problem is the 1.75" output flanges. Good luck flowing 400hp through them w/o nitrous.
Ill be the first to hack em off and run something larger. If im wrong you can all laugh at me for wasting time and $.
If im right remember it was my idea and i was the first to do it. Yes i feel special...lol
The problem is the 1.75" output flanges. Good luck flowing 400hp through them w/o nitrous.
Ill be the first to hack em off and run something larger. If im wrong you can all laugh at me for wasting time and $.
If im right remember it was my idea and i was the first to do it. Yes i feel special...lol
I sure that AMG had a reason for this.
First, the exhaust set up (beyond the manifolds) is different between the AMG and N/A cars (MB & XF) so AMG had the opportunity to redesign the flanges when they designed AMG exhaust system. (Since they were not just bolting on the N/A exhaust pipes)
Perhaps they did not want to change the manifold design due to costs etc.. I just don't know.
But I think you may loose low-end torque and see gains at the higher RPM level - and I would bet that AMG was not willing to sacrifice what their customers (market) would expect in their $65K coupe or SLK. (dead stop acceleration)
I look forward to seeing your results testing this idea out. Perhaps the gains at the top end will make up for any possible loss on the low end for the 1/4 mile guys.
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
Originally Posted by Cal_Cobra
Again it all depends on the headers, not all headers are created equally, their tuned for different applications. On the Viper there's so much low end torque (488ft lbs stock) that loosing a bit on the low end probably may not be a big deal depending on what your doing wiht the car. I took mine to Thunder Hill and it was an absolute blast, sounds like a full on race car with the (then) new exhaust.
What headers are you running ? I'm also running a full billy boat exhaust, sans cats.
What headers are you running ? I'm also running a full billy boat exhaust, sans cats.
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
Well, just got back from the 'before' dyno. A glitch has occurred, however. They installed the Needswings CAI prior to the dyno, so the 'before' will not be to stock.
HP to the wheels...........311.2
Grunt...........................311
DADDY'S SO PROUD!!!
HP to the wheels...........311.2
Grunt...........................311
DADDY'S SO PROUD!!!
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Re: what's the verdict on the LET Motorsports SRT6 Headers ?
How much longer till we see and after? I'm assuming your sticking with the same dyno machine so we dont get misleading numbers. What dyno did you use those aren't bad numbers for just a intake.