First Impressions: EM Headers
Thread Starter
Race Director
Joined: Jan 2002
Posts: 12,263
Likes: 86
From: O'Fallon Missouri
First Impressions: EM Headers
I recieved my Exotic Muscle headers two weeks ago. They were everything that I heard they were, one of the best built set of headers I have seen.
Installed the headers and Dynatech 3" PowerCats last Sunday. The install was pretty straight forward. Just push the headers up from under the car, and the fit was near perfect. The only problem was, you have to be a little creative reinstalling the spark plugs. Oh, if you plan on running the air tubes, remember to drill out the holes, they don't come predrilled.
Finally started the car today, with just headers and cats. WOW, the car sounds like a Pro Stocker. Going to the muffler shop Saturday, to get the cat-back hooked up.
Also, going to dyno the car March 13, to compare Hooker shorties and stock cats, compared to the EM longtubes and Dynatech PowerCats.
More updates to come.
Installed the headers and Dynatech 3" PowerCats last Sunday. The install was pretty straight forward. Just push the headers up from under the car, and the fit was near perfect. The only problem was, you have to be a little creative reinstalling the spark plugs. Oh, if you plan on running the air tubes, remember to drill out the holes, they don't come predrilled.
Finally started the car today, with just headers and cats. WOW, the car sounds like a Pro Stocker. Going to the muffler shop Saturday, to get the cat-back hooked up.
Also, going to dyno the car March 13, to compare Hooker shorties and stock cats, compared to the EM longtubes and Dynatech PowerCats.
More updates to come.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Re: First Impressions: EM Headers (cprgmr)
You can use a 10* offset box wrench, this is what I used to tighten them hard to get to spark plugs with my EM headers:
http://buy1.snapon.com/catalog/pro_d...re&dir=catalog
http://buy1.snapon.com/catalog/pro_d...re&dir=catalog
Advanced
Joined: Jul 2002
Posts: 60
Likes: 0
From: Tempe AZ
Re: First Impressions: EM Headers (STL94LT1)
Sounds great. I just ordered EM headers for my LT4. What is your set-up re: cats, and catback. Did you have to install the o2 simulators ? I am trying to configure my set-up. Your feedback would be great. What else do you have on your LT4 ?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Race Director
Joined: Jan 2002
Posts: 12,263
Likes: 86
From: O'Fallon Missouri
Re: First Impressions: EM Headers (gs109)
Sounds great. I just ordered EM headers for my LT4. What is your set-up re: cats, and catback. Did you have to install the o2 simulators ? I am trying to configure my set-up. Your feedback would be great. What else do you have on your LT4 ?
The exhaust setup is: EM longtubes, Dynatech PowerCat 3" mettalic substrate cats, and a Flowmaster cat-back system.
Being a 94 my Vette only has one rear O2 sensor, that is really not needed. But, I am going to have a O2 bung installed in the extension, to run the O2 and possibly a wide band O2.
Thread Starter
Race Director
Joined: Jan 2002
Posts: 12,263
Likes: 86
From: O'Fallon Missouri
Re: First Impressions: EM Headers (ronkvette)
I use Mustang Muscle in High Ridge for their dyno and wide band O2, and use Tunercat and Datamaster to do my own tuning.
Myself and 4 or 5 other Vettes will be at MM March 13 tuning, stop by if you want to check out the tuning process. We have 5 hours rented, so will be there most of the late morning and afternoon.
Myself and 4 or 5 other Vettes will be at MM March 13 tuning, stop by if you want to check out the tuning process. We have 5 hours rented, so will be there most of the late morning and afternoon.
Thread Starter
Race Director
Joined: Jan 2002
Posts: 12,263
Likes: 86
From: O'Fallon Missouri
Re: First Impressions: EM Headers (STL94LT1)
I had the cat-back hooked up this morning. Car isn't a whole lot louder than with the shorties and factory cats, just a bit deeper sounding.
Did a couple of WOT runs. Car seems to be pulling really strong. Guess we'll see what the dyno says on the 13th.
Did a couple of WOT runs. Car seems to be pulling really strong. Guess we'll see what the dyno says on the 13th.
Drifting
Joined: Jun 2001
Posts: 1,997
Likes: 1
From: Lake Ozark MO
Re: First Impressions: EM Headers (STL94LT1)
Mike, this is going to be interesting and educational for me this next dyno session.
Jim elected to go with head work and you did the longtubes. I will be doing both to mine at some point but these dyno results will go a long way in seeing which will provide the best benefit.
It's great to have friends that try this stuff out before I do :)
Jim elected to go with head work and you did the longtubes. I will be doing both to mine at some point but these dyno results will go a long way in seeing which will provide the best benefit.
It's great to have friends that try this stuff out before I do :)
Le Mans Master
Joined: Aug 1999
Posts: 7,339
Likes: 137
From: WilkesBarre PA
Re: First Impressions: EM Headers (Dan Parker '96)
We installed my buddys last weekend. They seemed to fit as well as my DRMs. Only problem is the tube extensions that i ordered with them didn't come with the headers. They said another 2 weeks :mad. sucks that they were all ordered at the same time.
