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  • Tomei Unequal Length Exhaust Manifold (Subaru EJ20/25) - Modern Automotive Performance
  • Tomei Unequal Length Exhaust Manifold (Subaru EJ20/25) - Modern Automotive Performance

     Fall Sale

    Tomei Unequal Length Exhaust Manifold (Subaru EJ20/25)

    MAP Loyalty Program: Earn $ 14.22 Toward Next Purchase!
    PART# TOM TB6010-SB02A 
    We Price Match!

    Contact us to ensure you're getting the right part for your car at the absolute best pricing on earth!

    Email - sales@maperformance.com
    Phone 1(888)MAPerformance

    $ 711.00   $790.00
    You Save 10% ($79.00)

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    Grab some upgraded gaskets for your install!

      Upgraded Manifold-to-Head Gaskets
    GrimmSpeed Exhaust Manifold-to-Head Gaskets (Pair) | Multiple Subaru Fitments (020001)
    GrimmSpeed Exhaust Manifold-to-Head Gaskets (Pair) | Multiple Subaru Fitments (020001) 
      $18.00
    Default Title Tomei Unequal Length Exhaust Manifold (Subaru EJ20/25) - TOM TB6010-SB02A $ 711.00
    Fits Your

    Tomei Unequal Length Exhaust Manifold (Subaru EJ20/25) - Modern Automotive Performance

    Tomei introduced the high efficiency 4-1 as against the STD 4-2-1. The exhaust efficency of the standard exhaust manifold is not perfect. Tomei 4-1 type exhaust manifold has high efficency. You could see the change of dramatically driving feeling. The complete equal length is good for the exhaust intervention but reduce the turbine performance and increase the exhaust resistance. Contrary to that, the not-equal length exhaust manifold can lead the efficiency of other cylinders. Tomei designed not-equal length to keep the boxer sound. The clear sound which got dry further by change to the diameter of the support pipe and the stainless steel quality of the material is pulled out and the good feeling could be obtained at the acceleration. Tomei designed the Lost Wax type strength flange. They are perticular about the welding and exhaust efficiency is improved very much. Tomei selected SUS304 stainless steel which is lightweight and rust-proof. They prepared bolts, gaskets, and easy and full instruction manual for privator.

    Kit Contents

    • Exhaust Manifold unit
    • Uppipe
    • 50mm x 15m Thermal Bandage
    • Bands
    • Gaskets
    • Bolts
    • Stickers

    Tomei introduced the high efficiency 4-1 as against the STD 4-2-1. The exhaust efficency of the standard exhaust manifold is not perfect. Tomei 4-1 type exhaust manifold has high efficency. You could see the change of dramatically driving feeling. The complete equal length is good for the exhaust intervention but reduce the turbine performance and increase the exhaust resistance. Contrary to that, the not-equal length exhaust manifold can lead the efficiency of other cylinders. Tomei designed not-equal length to keep the boxer sound. The clear sound which got dry further by change to the diameter of the support pipe and the stainless steel quality of the material is pulled out and the good feeling could be obtained at the acceleration. Tomei designed the Lost Wax type strength flange. They are perticular about the welding and exhaust efficiency is improved very much. Tomei selected SUS304 stainless steel which is lightweight and rust-proof. They prepared bolts, gaskets, and easy and full instruction manual for privator.

    Kit Contents

    • Exhaust Manifold unit
    • Uppipe
    • 50mm x 15m Thermal Bandage
    • Bands
    • Gaskets
    • Bolts
    • Stickers

    MAP Limited Lifetime Warranty

    1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

    2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

    3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

    4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

    For warranty evaluation please create a support ticket via this form here.

    Hello!

    Unfortunately due to vendor restrictions we are unable to sell this brand within Australia or the UK. If you have any questions, feel like you received this message in error or would like suggestions on other brands please contact us here.

    Hello!

    Unfortunately due to vendor restrictions we are unable to sell this brand within Australia. If you have any questions, feel like you received this message in error or would like suggestions on other brands please contact us here.

    Hello!

    Unfortunately due to vendor restrictions we are unable to sell this brand within your country. If you have any questions, feel like you received this message in error or would like suggestions on other brands please contact us here.

    Hello!

    Unfortunately due to vendor restrictions we are unable to sell this brand within California. If you have any questions, feel like you received this message in error or would like suggestions on other brands please contact us here.

    Customer Reviews

    Based on 4 reviews
    75%
    (3)
    25%
    (1)
    0%
    (0)
    0%
    (0)
    0%
    (0)
    L
    L.
    Quality product

    High quality materials and welds. Product came with instructions and all necessary hardware. Had to be separated slightly to get the flanges to line up with the studs perfectly. It's a little challenging because they separate pretty hard and take a good amount of force to get them to move. And to be expected the heat wrap they send gets fiberglass everywhere so be prepared for that or you'll be itching for days. Overall very happy.

    T
    T.m.
    UEL HEADERS

    Fast delivery
    Easy install in my car
    All u need it’s in the box

    V
    V.
    Big Job, Big Changes

    Purchased this for my 2017 wingless STi limited. The header and up pipe are included along with studs for up pipe, gaskets, nuts and bolts for up pipe to header, and header wrap. They expect you to use your stock nuts, so do not lose them.

    The good:

    it looks cool and is well constructed; My tuner loves it and stated it is a part of why I am getting 380 torque at the wheels; I was able to remove up pipe without lifting engine; I did not wrap my header, so it may account for some of the bad. Pics at #vinnys_sti

    The bad:

    This is a big job, you have to remove your up-pipe, header, down pipe, intercooler, intake (for space) and then you have to put it all back together, check for leaks, etc. It took several hours and I have yanked this care apart more times than I can count, so be prepared for a long day. also, do not tighten anything up all the way before you check to see that your down pipe will line up with your exhaust because I tightened everything up and when I put the Maperformance down pipe back on it was off by over an inch at the exhaust. Not fun to loosen this all up again.

    Heat is an issue. Again, I did not wrap mine as I am having it ceramic coated.The engine bay is so hot you can roast hot dogs when you open the hood and if you are running a cold air intake (with a metal inlet pipe) you will see a difference in your air temps as the pipe will be extremely hot. Your TM intercooler will not like it either.

    The sound will change drastically. Again, wrapping the header may help this, but adding this changed the sound of my car to a more hollow, raspy sound and it is extremely loud and it drones horribly.

    It did not fit the engine studs and needed to be spread by 1/8 inch. This was not easy and took a lot of effort and a rubber mallet.

    Verdict: long install, raspy, hollow sound, very loud, lots of heat; however, great quality, and big torque gains after pro tune. Would buy again.

    P
    P.K.
    Uel header

    Sound great and easy install

    Customer Reviews

    Based on 4 reviews
    75%
    (3)
    25%
    (1)
    0%
    (0)
    0%
    (0)
    0%
    (0)
    L
    L.
    Quality product

    High quality materials and welds. Product came with instructions and all necessary hardware. Had to be separated slightly to get the flanges to line up with the studs perfectly. It's a little challenging because they separate pretty hard and take a good amount of force to get them to move. And to be expected the heat wrap they send gets fiberglass everywhere so be prepared for that or you'll be itching for days. Overall very happy.

    T
    T.m.
    UEL HEADERS

    Fast delivery
    Easy install in my car
    All u need it’s in the box

    V
    V.
    Big Job, Big Changes

    Purchased this for my 2017 wingless STi limited. The header and up pipe are included along with studs for up pipe, gaskets, nuts and bolts for up pipe to header, and header wrap. They expect you to use your stock nuts, so do not lose them.

    The good:

    it looks cool and is well constructed; My tuner loves it and stated it is a part of why I am getting 380 torque at the wheels; I was able to remove up pipe without lifting engine; I did not wrap my header, so it may account for some of the bad. Pics at #vinnys_sti

    The bad:

    This is a big job, you have to remove your up-pipe, header, down pipe, intercooler, intake (for space) and then you have to put it all back together, check for leaks, etc. It took several hours and I have yanked this care apart more times than I can count, so be prepared for a long day. also, do not tighten anything up all the way before you check to see that your down pipe will line up with your exhaust because I tightened everything up and when I put the Maperformance down pipe back on it was off by over an inch at the exhaust. Not fun to loosen this all up again.

    Heat is an issue. Again, I did not wrap mine as I am having it ceramic coated.The engine bay is so hot you can roast hot dogs when you open the hood and if you are running a cold air intake (with a metal inlet pipe) you will see a difference in your air temps as the pipe will be extremely hot. Your TM intercooler will not like it either.

    The sound will change drastically. Again, wrapping the header may help this, but adding this changed the sound of my car to a more hollow, raspy sound and it is extremely loud and it drones horribly.

    It did not fit the engine studs and needed to be spread by 1/8 inch. This was not easy and took a lot of effort and a rubber mallet.

    Verdict: long install, raspy, hollow sound, very loud, lots of heat; however, great quality, and big torque gains after pro tune. Would buy again.

    P
    P.K.
    Uel header

    Sound great and easy install

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