Catalytic Convertor By-Pass Pipe Stainless Steel MX5 Mk1 Reviews

4.6 Rating 45 Reviews

All NewNow supplied as a silenced bypass pipe, in 100% polished 304 Stainless Steel, complete with all fixing bolts and gaskets.100% Stainless steel catalytic convertor by-pass pipe (cat replacement pipe). For the removal of the catalytic convertor from the exhaust system.All Mk1 1989>1998There are three different cats fitted to the Mk1, 1.6 or 1.8 upto 1994. This cat is 370mm in length.1.6 or 1.8 from 1994 to 1996. This cat is 440mm in length.1.6 or 1.8 1996/8. This cat is 475mm in length. A cat replacement pipe is NOT available for this model.The safest way to ensure you order the correct pipe is to measure the distance between the two mounting flanges of your existing cat.Supplied complete with gaskets and bolts.Please Note: As from January 1st 2012, the UK MOT laws changed regarding catalytic convertors. Any vehicle built after 1992, MUST have a catalytic convertor fitted regardless of whether or not it passes an emissions test. Any car presented without a cat fitted will fail. We would advise checking with your MOT tester before fitting this pipe if the car is being used on the road.
Even though this is a 'silenced' bypass pipe, the removal of the catalytic convertor WILL result in an increase in exhaust noise! Some like it, others do not. Beware!

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02392 644588

Email:

sales@mx5parts.co.uk

Location:

1 Orion Court, 5 Rodney Road,,
Portsmouth
PO4 8SZ

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Oliver Wilson

Verified Reviewer

“Hi, thought I would write a more detailed review plus a video for anyone, like me who could not make their mind up... I have a Eunos import 1.6, after much debating over what Exhaust system to go for and whether or not to by pass the CAT as my Eunos is a 1991... I bit the bullet! I was looking for a sound that complemented the DOHC 16v engine and something that married well the induction noise... Ive spent hours online listening to exhaust notes on Youtube driving everyone in the household mad! Ive been to a couple of car show/meets to listen to the other Mx5's... Anal I know! I just wanted to get it right.SO, I purchased both the Silenced Cat By-Pass 370mm and the MX5 parts exhaust single exit over the weekend, to my amazement they had them on offer! PURCHASED! The system looked like a doddle to fit so anyone with the skills and equipment should have no probs! The bolts on mine had seized so I thought 'sod it' and took it to a good local garage who fit it for £24... Just got back now and I can tell you it sounds fantastic! I am trully chuffed to bits! There is NO loss of LOW rev range power which apperently is a bit of a myth... If anything it has slightly more poke! It is loud on the Revs but not as loud as some of the other reviews state. It just has a really sporty tone which complements the engine perfectly and does NOT sound like a 'bakebean can' chav exhaust! On start up and over run there is a lovely deep growl/burble with a hollowish high rev rasp on excelleration... its great! So, the main points of concern (bear in mind I have sorted out the Induction)Is it too loud? - NO, not at all, I can imagine if you are not used to sporty exhausts etc... then you may think so, but, as an example; my Dad had a full Larini exhaust system on his and that was LOUD, louder than this! and he is 60! He has just told me that he thinks this sounds amazing and is just right in comparrison (The Larini was close to £500 excluding fitting) Loves it! If you are still worried then I could suggest try it without the de-cat pipe from the CAT back which in theory should lower the tone... However you will be suprised with it de-catted, it is just right!Loss of power? - NO, Like I said if anything a little more!Easy to fit? - YES well I presume so if your bolts aren't seized, there are ways around this with preperation but I was to excited! and couldn't wait... Apperently one of the exhaust hangers can drop off on the older cars around the CAT area I believe, this is common and you can by a replacement from this website so I would check this first. I would recomend these products to any MX5 enthusiast! They are top notch quality for the price, the service at MX5 parts is excellent, the guys there are great to chat too and really know their stuff! I ordered the parts at 12:00pm Thursday, got a text to say I would recieve them at 4:13pm Friday afternoon and the delivery driver turned up at 4:12pm and made a quip about being a minute early! Astonishing service! The de-cat pipe and exuast came really well protected/packaged and ready to go! Fantastic. If they get and bad reviews on here I am sure it will be a rare scenario or something out of thier control...Conclusion: (of course this is personal opinion)Don't worry, you are in safe hands... The system is amazing for the money I can honestly say the sound is great and complements the engine perfectly! I am a designer, so a bit of a perfectionist and critical, but I am chuffed to bits! Here is a link to a vid I have put up on Youtube so you can decide your self... Hope it helps!http://www.youtube.com/watch?v=94vjSpMsxZY&list=HL1348919062&feature=mh_lolz”

1 Helpful Report

Posted 12 years ago

“Very bad thing, only 2500km before big vibrations!!!!!”

Helpful Report

Posted 12 years ago

Simon Hyland

Verified Reviewer

“My original cat heatshield disintegrated leaving me with a very loud rattle on acceleration. Ordered the cat by-pass, MX5Parts usual great service. Had some problems removing the old cat due to space and seized bolts. Managed to grind off the two front bolts, then had to drop the rear of the exhaust to gain access to grind off the rear bolts. Once the old cat was off, took 15 minutes to replace the exhaust with the by-pass. Car is alot more responsive, and my mpg has improved impressively. I wouldn't say there is alot more noise but do have a nice growl on acceleration! 1990 MX5 Mk1 1.6, standard manifold and back box”

Helpful Report

Posted 13 years ago

Adam Bransbury

Verified Reviewer

“Excellent quality and fit!!! fitted with my obscure OBX front manifold brought from USA to save money. Sounds lovely with mx5parts stainless system as well :-) fitted onto mk1 1.8 eunos roadster.”

Helpful Report

Posted 13 years ago

Alessandro Sassi

Verified Reviewer

“Great quality & excellent price for this stainless steel decat ;) It comes with all the hardware to install it,so it's really plug & play ! Thumbs up !”

Helpful Report

Posted 13 years ago

Ms Kim Roberts

Verified Reviewer

“Beautifully make bit of kit, just a shame it cant be seen!! Found the engine to revved more freely with a slight increase in sound. Nice .”

Helpful Report

Posted 13 years ago

Gary Doodney

Verified Reviewer

“As usual very rapid delivery, high quality item and my garage man was very impressed and easily fitted.Bought this together with stailess steel twin pipe exhaust.”

Helpful Report

Posted 13 years ago

Alberto Torres Centeno

Verified Reviewer

“This product is horrible, looks pretty good outside, but inside the mesh was released after 4 months of use, had to weld it and re-release, I finally had to be replaced by a straight section.Pretty bad for what we are accustomed-MX5 Parts, I do not like this product.”

Helpful Report

Posted 13 years ago