MHP Long Tubes 44rwhp over Kleemann Headers
Thread Starter
MBWorld Fanatic!
Joined: Oct 2008
Posts: 1,521
Likes: 3
From: Central Florida
2013 Chevy 427 Torch Red
MHP Long Tubes 44rwhp over Kleemann Headers
MHP long tubes (catless) were installed last week in place of the Kleemann headers. The gains are solid and spread across the entire powerband. The car still has the Kleemann tune which has reacted very well to the new pipes with no drivablity issues and NO CEL! Dyno's were done one day apart same time of day with 95 degree temp and 40% humidity. The K2 package had pulled a 432 on this dyno in better air but pulled a 413 this time. Keith's MKB package was down quite a bit from winter numbers on this same dyno. With the MHP LT's we pulled 457 and I am very curious to dyno again later in the year and see what the real numbers may be. Keith's package with MHP tune and pipes is still about 10- 15 stronger than mine but I am very pleased with the results. Track times will have to wait until late this year, no point at all this time of year. Street driving is transformed almost to the same degree that the K2 install provided but it is LOUD...timid souls should consider including cats!
As you can see the LT's include 3" pipe all the way back to the resonator.
As you can see the LT's include 3" pipe all the way back to the resonator.
MBWorld Fanatic!
Joined: Sep 2008
Posts: 2,177
Likes: 14
From: Central Florida
2014 Audi RS7
WHAT DID YOU SAY!!!! I CAN"T HEAR YOU!!
Seriously, CONGRATS!! These things are awesome and do generate a tremendous amount of power! However, they are LOUD and if you are weak at heart then order the cats! They scare other drivers and large animals. Hey, thats the fun in having them.
Be safe and have fun racing!
Can't wait for cooler weather so we can see what they are worth in the 1/4. This Florida weather is NOT condusive to racing in the summer.
Seriously, CONGRATS!! These things are awesome and do generate a tremendous amount of power! However, they are LOUD and if you are weak at heart then order the cats! They scare other drivers and large animals. Hey, thats the fun in having them.
Be safe and have fun racing!
Can't wait for cooler weather so we can see what they are worth in the 1/4. This Florida weather is NOT condusive to racing in the summer.
Super Member
Joined: Feb 2009
Posts: 577
Likes: 0
LS430
MHP long tubes (catless) were installed last week in place of the Kleemann headers. The gains are solid and spread across the entire powerband. The car still has the Kleemann tune which has reacted very well to the new pipes with no drivablity issues and NO CEL! Dyno's were done one day apart same time of day with 95 degree temp and 40% humidity. The K2 package had pulled a 432 on this dyno in better air but pulled a 413 this time. Keith's MKB package was down quite a bit from winter numbers on this same dyno. With the MHP LT's we pulled 457 and I am very curious to dyno again later in the year and see what the real numbers may be. Keith's package with MHP tune and pipes is still about 10- 15 stronger than mine but I am very pleased with the results. Track times will have to wait until late this year, no point at all this time of year. Street driving is transformed almost to the same degree that the K2 install provided but it is LOUD...timid souls should consider including cats!
As you can see the LT's include 3" pipe all the way back to the resonator.
As you can see the LT's include 3" pipe all the way back to the resonator.
Wow amazing pickup on power! With that being said you stated the Kleemann pulled 432rwhp on better conditions, doesn't that mean that this new setup has more power to make once it gets cooler and air quality is better.
Do you plan to take it back to the strip?
Member
Joined: Sep 2008
Posts: 101
Likes: 6
E55, GMC Suburban, F430 matchbox, Caddooo DTS
The headers look good. It is very hard to believe that there was that kind of increase in power with just changing the headers but I guess you never know. Were you using cats with the Kleemann headers and took them off with the new headers? I have never seen headers make such a difference on a basically stock car.
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
MBWorld Fanatic!
Joined: Oct 2008
Posts: 1,521
Likes: 3
From: Central Florida
2013 Chevy 427 Torch Red
Several questions pending I'll try my best to answer them
The K2 package best pull was 432 in March and the car ran a 11.999 at 117mph with street tires on a semi decently prepped track. I have not seen anyone post a 440 K2 pull but it may have happened.
Keith and I use the same dyno and he pulled much lower numbers as well compared to winter climate. His gains were high also simply by replacing the shorties with the MHP LT's. Improvements over the OEM manifolds should be really profound!
Winter climate here in Florida may yield anything from 10-30 more rwhp but we won't know until later.
These pipes work great with the Kleemann tune if you already have it but Keith's numbers with the MHP tune are a bit higher. This is definitely a more expensive route, check the MHP site for current pricing just depends on what your goals are.
This is a true bolt on setup from block to resonator and accomplishes a rear cat delete in the process. Because it is sectional cats can be included just behind the collectors.
I will be selling the Kleemann setup at a reasonable price....more info will follow in the classifieds
The K2 package best pull was 432 in March and the car ran a 11.999 at 117mph with street tires on a semi decently prepped track. I have not seen anyone post a 440 K2 pull but it may have happened.
Keith and I use the same dyno and he pulled much lower numbers as well compared to winter climate. His gains were high also simply by replacing the shorties with the MHP LT's. Improvements over the OEM manifolds should be really profound!
Winter climate here in Florida may yield anything from 10-30 more rwhp but we won't know until later.
These pipes work great with the Kleemann tune if you already have it but Keith's numbers with the MHP tune are a bit higher. This is definitely a more expensive route, check the MHP site for current pricing just depends on what your goals are.
This is a true bolt on setup from block to resonator and accomplishes a rear cat delete in the process. Because it is sectional cats can be included just behind the collectors.
I will be selling the Kleemann setup at a reasonable price....more info will follow in the classifieds
Former Vendor of MBWorld
Joined: Sep 2008
Posts: 1,935
Likes: 5
AMG
Holy Torque Plateau Batman! Peak torque from roughly 3200-5400, that's impressive to say the least. Although considering everything was deleted, and its a 6.3L I'm not surprised it made amazing power. Hats off to MHP.
On a side note, I wonder what happened to the A/Fs at 6600rpm, thats an odd spike. It may just be a one time fluke but it appears you may be able to pick up some more power if you lean out the mixture a bit, its getting down into the 11's which is pretty rich for an NA car. still, very impressive.
On a side note, I wonder what happened to the A/Fs at 6600rpm, thats an odd spike. It may just be a one time fluke but it appears you may be able to pick up some more power if you lean out the mixture a bit, its getting down into the 11's which is pretty rich for an NA car. still, very impressive.
Thread Starter
MBWorld Fanatic!
Joined: Oct 2008
Posts: 1,521
Likes: 3
From: Central Florida
2013 Chevy 427 Torch Red
Holy Torque Plateau Batman! Peak torque from roughly 3200-5400, that's impressive to say the least. Although considering everything was deleted, and its a 6.3L I'm not surprised it made amazing power. Hats off to MHP.
On a side note, I wonder what happened to the A/Fs at 6600rpm, thats an odd spike. It may just be a one time fluke but it appears you may be able to pick up some more power if you lean out the mixture a bit, its getting down into the 11's which is pretty rich for an NA car. still, very impressive.
On a side note, I wonder what happened to the A/Fs at 6600rpm, thats an odd spike. It may just be a one time fluke but it appears you may be able to pick up some more power if you lean out the mixture a bit, its getting down into the 11's which is pretty rich for an NA car. still, very impressive.
Thread Starter
MBWorld Fanatic!
Joined: Oct 2008
Posts: 1,521
Likes: 3
From: Central Florida
2013 Chevy 427 Torch Red
Not being a jerk but you will need to check their website. I am trying to share my experience with mods that I have installed and avoid "promoting" a non sponser hence no details links etc. I am thrilled however that the Kleemann tune which many members have is receptive to long tube headers regardless of origin.
Member
Joined: Jun 2008
Posts: 230
Likes: 0
2009 Black C63 AMG
Not being a jerk but you will need to check their website. I am trying to share my experience with mods that I have installed and avoid "promoting" a non sponser hence no details links etc. I am thrilled however that the Kleemann tune which many members have is receptive to long tube headers regardless of origin.
Super Member
Joined: Mar 2003
Posts: 869
Likes: 35
From: Pacific NW
AMG GT-R
Not to sway the topic, but you're best bet is to contact MHP directly. I don't believe their website reflects current pricing, or even the pricing for the headers. But what bigbodybeeenz posted is pretty close to what I paid for mine, however I also went with 300cpi high flow cats which adds a bit to the cost.
But back on topic, those gains are awesome hhughes! I didn't realize you were getting the long tubes, and I'm very happy to see they work well with your Kleeman tune! I've had mine sitting in the garage for nearly 2 months now, just been so busy/out of town all the time I havn't had a chance to get them installed. Next week for sure though And then I'm hitting the track!
Like others have mentioned...I can't wait to see you and Dads_C63 run side by side at the track, should be a very good race.
But back on topic, those gains are awesome hhughes! I didn't realize you were getting the long tubes, and I'm very happy to see they work well with your Kleeman tune! I've had mine sitting in the garage for nearly 2 months now, just been so busy/out of town all the time I havn't had a chance to get them installed. Next week for sure though
And then I'm hitting the track!Like others have mentioned...I can't wait to see you and Dads_C63 run side by side at the track, should be a very good race.
