• Comparison of MHP long tube and Renntech shorty M156 headers show poor weld and product quality from Renntech

      Pictures of these Renntech headers (it was confirmed these are in fact from Renntech Florida) were posted up by a BenzBoost user. We all know MHP makes a high quality product and that is seen here with what is clearly the MHP long tube setup. What is stated as the Renntech header appears to be a modified stock setup and clearly is not a long tube or race setup as we were told the customer asked for. An additional claim is that these are $8000 dollar headers from Renntech but in an article posted last week we showed the Renntech long tube headers which are ceramic coated for that price and they look nothing like these.

      We suggest you come to your own conclusion but there is no denying the terrible welds and simply poor quality of the shorty headers seen here vs. MHP. What one can definitively take away is the MHP long tube option is a solid one. We will wait on comments from Renntech and continue to state that Renntech is a high quality option. We also believe Renntech offers a warranty on exhaust pieces so if the owner was upset and this was a Renntech piece this issue would have been taken care of by quality customer service.















      * It was confirmed that these are in fact headers from Renntech Florida.



      This article was originally published in forum thread: RENNTECH versus MHP Headers Pics started by JBond View original post
      Comments 271 Comments
      1. Exeenom's Avatar
        Exeenom -
        Click here to enlarge Originally Posted by JBond Click here to enlarge
        No, you read what you wanted to read out of mine. You don't know either side, I know one. The side I've heard matches up with what I've been shown. I don't really care what's on the site or mailer, I know what the customer asked for, was promised, and what he paid for it. You can ask RENNTECH why when he asked for performance longtubes to make the car as fast as possible they stuck him with those logs. I'll tell you right now you will have zero progress on the RENNTECH front. Customer exhausted all possibility by asking RENNTECH to help him over and over again and they refused every time.
        I never said I know both sides.... I said there are always more than one side to the story. One can't just hear from one side what happened and judge the situation. If you were truly biased about this, you would've wanted to hear both sides of the story not just the side that pays you.

        Click here to enlarge Originally Posted by JBond Click here to enlarge
        No, I'm not a RENNTECH competitor, and why shouldn't I be talking?
        Are you sure? Click here to enlarge

        Click here to enlarge Originally Posted by JBond Click here to enlarge
        I know what the customer told me RENNTECH told him and once you talk to him you tell me he's a liar. Click here to enlarge
        I never said he was a liar... I just said we don't know the full story, is that really that hard to understand? :confustion-shrug:

        Click here to enlarge Originally Posted by JBond Click here to enlarge
        Everyone knows you sent your car to RENNTECH, BUT no results have been posted performance wise. Why? Where are the dynos, timeslips, pictures of your mods?
        Only a few close friend know where or what my car has been.

        Click here to enlarge Originally Posted by JBond Click here to enlarge
        Post your receipt. I gave you the info to back my claims, now man up and do the same.
        I can make a LOT of money winning this bet buddy because you have no idea what I've done to my car, what I have not done or what I was charged.

        Click here to enlarge Originally Posted by JBond Click here to enlarge
        You are like RENNTECHs mouthpiece on the forums, anytime there is an issue you post in their defense without knowing either side of the story. In this instance instead of posting a presumptuous rant why not PM me for further info so you can investigate further? That's what you should have done instead of mindlessly guessing as to why this customer has been shut out customer service wise.
        Incorrect again.... I did not jump in and say the customer was lying. I jumped in and said we should know more about the situation and hear all sides of the story before making quick assumptions. You know (perhaps more than most) that I've defended MHP and other tuners when the situation called for. I don't like to just jump in after hearing one side of the story.

        Click here to enlarge Originally Posted by JBond Click here to enlarge
        Liaison for MHP? That's funny. I post a pic comparing a legitimately designed and priced header, then one that's the opposite, clearly not photoshopped (computer nerds eat your heart out) and tell the same story you will hear from the customer and shop whose info I sent you already. You immediately jump to RENNTECHs defense (per usual) about other people but have nothing to say about this case, the only one relevant right now.
        Again, I jumped in their defense with facts explaining how they've taken care of other people with a similar situation. And all I called for was to hear all the facts and all the sides to the story, but for some reason you got butt-hurt about because you're thinking that I'm attacking the customer or something Click here to enlarge

        Click here to enlarge Originally Posted by JBond Click here to enlarge
        $#@! MHP,
        not sure you really believe in that Click here to enlarge
      1. DAGREEKNYC's Avatar
        DAGREEKNYC -
        Goes to show u that more expensive does not mean a better product .
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by JBond Click here to enlarge
        Whoever the $#@! edited the thread title can change it back asap because they are in fact RENNTECH headers.
        Nobody edited the thread title as if you go look at the OP everything is intact. What happens is when a post is promoted to the front page the software AUTOMATICALLY inserts "Article:" and then that post title. Nothing was edited or changed, this is simply how the newer versions of Vbulletin work.
      1. Sticky's Avatar
        Sticky -
        I would like for it to be established these are in fact Renntech headers before I throw Renntech under the bus. No reason to jump to conclusions and it is in the consumers best interest to proceed carefully.
      1. Exeenom's Avatar
        Exeenom -
        I just personally talked to the shop that had to fix these headers and he did confirm that they got them directly from RENNtech Florida (not from any other dealer or third party source). The story is even more shocking than what was presented.

        However, I will talk to the customer and to RENNtech tonight and report back as much details as I can.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Exeenom Click here to enlarge
        I just personally talked to the shop that had to fix these headers and he did confirm that they got them directly from RENNtech Florida (not from any other dealer or third party source). The story is even more shocking than what was presented.

        However, I will talk to the customer and to RENNtech tonight and report back as much details as I can.
        Thank you, that is a bit disturbing.

        I will edit the article title to confirm these belong to Renntech and also contact the customer as well. Thank you for being level headed Mo.
      1. JBond's Avatar
        JBond -
        Click here to enlarge Originally Posted by Exeenom Click here to enlarge
        I just personally talked to the shop that had to fix these headers and he did confirm that they got them directly from RENNtech Florida (not from any other dealer or third party source). The story is even more shocking than what was presented.

        However, I will talk to the customer and to RENNtech tonight and report back as much details as I can.
        Thank You.

        Thank you for following through like you said you would and also for being honest.

        You have my respect.
      1. Sticky's Avatar
        Sticky -
        Article edited to reflect the facts.
      1. Exeenom's Avatar
        Exeenom -
        I have gathered a lot more information about this scenario and will post some more details soon. However, I would like to talk to the customer first so that I make sure what I present is first-hand response. The customer is currently unavailable and may not be until tomorrow afternoon.

        For now.... lets (for once) withhold judgement until both sides get to chime in on all the details.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Exeenom Click here to enlarge
        I have gathered a lot more information about this scenario and will post some more details soon. However, I would like to talk to the customer first so that I make sure what I present is first-hand response. The customer is currently unavailable and may not be until tomorrow afternoon.

        For now.... lets (for once) withhold judgement until both sides get to chime in on all the details.
        Looking forward to it Mo.
      1. JBond's Avatar
        JBond -
        Click here to enlarge Originally Posted by Exeenom Click here to enlarge
        I have gathered a lot more information about this scenario and will post some more details soon. However, I would like to talk to the customer first so that I make sure what I present is first-hand response. The customer is currently unavailable and may not be until tomorrow afternoon.

        For now.... lets (for once) withhold judgement until both sides get to chime in on all the details.
        I'm game but I'm sure you can at least pass on what you've garnered from RENNTECH about the quality of the product? Surely they don't condone it?
      1. JBond's Avatar
        JBond -
        Exenom,

        Are these your RENNTECH longtubes?

        http://www.amgperformance.net/online...neak-peak.html

        Click here to enlarge

        Click here to enlarge

        If so we need to talk Click here to enlarge
      1. 63Master's Avatar
        63Master -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Kind of hard to hide when you are here everyday posting in every thread.

        I wouldn't jump to conclusions just yet.

        You are very quick to judge and jump to conclusions, I can't help but feel you are a kid.
        thats ok coming from the person whos feelings seem to always mislead himClick here to enlarge


        I dont know whats been said here. I havent read the pages to this whole thread, but those are exactley the LT header from renntech that my friend paid for $8000 and is now replacing them with MBH.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 63Master Click here to enlarge
        thats ok coming from the person whos feelings seem to always mislead himClick here to enlarge


        I dont know whats been said here. I havent read the pages to this whole thread, but those are exactley the LT header from renntech that my friend paid for $8000 and is now replacing them with MBH.
        Really? So you have another friend having this exact same problem or you are friends with random Texas Ranchers?
      1. ecampbell's Avatar
        ecampbell -
        Click here to enlarge Originally Posted by JBond Click here to enlarge
        NP. FWIW porting heads as good as these won't gain you much if any power especially with a supercharger forcing the air in supplying both mass and velocity of air.

        Save the $ and spend elsewhere.
        What research did you do on this as the headwork is proven to pick up HP on a S/C application.
      1. mramg1's Avatar
        mramg1 -
        Click here to enlarge Originally Posted by ecampbell Click here to enlarge
        What research did you do on this as the headwork is proven to pick up HP on a S/C application.
        To be fair about his statment. On the intake side, he is right that you would not see as big of gain when compared to a NA motor because after all you are forcing the air in. AKA it would be more tolerant to imperfections in the port, valve guide area, etc, etc. since you are forcing the air past these imperfections.
        Yes there is still some gains to be had here, but just not as large as the exhaust side.

        Now on the exhaust he is DEAD wrong. Here is where a FI motor would see a HUGE gain. Keep in mind that except druing the very breif part of valve overlap, the FI motor has the same problem getting the spent gas out of the cylinder as a NA motor. Only more so now as you are forcing more air in.

        How do I know, I have done it an a SCCA world challange car.
      1. ecampbell's Avatar
        ecampbell -
        mrang1 - bond appeared confused so I wanted to find out what research he did before telling him he was wrong but as you have already done so we are all good!
      1. mramg1's Avatar
        mramg1 -
        No sweat my friendClick here to enlarge
      1. AMG4V's Avatar
        AMG4V -
        Click here to enlarge Originally Posted by JBond Click here to enlarge
        Because they were sold as "custom" headers by RENNTECH for $8200. Any other questions?

        Again, don't believe it.
        A bit more proove then your word please.
      1. AMG4V's Avatar
        AMG4V -
        Click here to enlarge Originally Posted by JBond Click here to enlarge
        Dude, there were no cats used in this system and this is not even an issue. Piss off.
        Another hint just for you:
        Those shorties ARE designed to retain the OE cat at the OE location, and that is how it is installed. Unless of course the owner of the car or his exhaust shop is cutting those out and is modifying the exhaust system. I doubt that Renntech or any tuner for that matter has any controp over that.
        And if it is the same shop that attempted the repair on those pictured I wouldn't be surprised at all why those headers cracked in first place.