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2bular Exhausts

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2bular Exhausts last won the day on September 11 2015

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About 2bular Exhausts

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    Jim Valentine
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    Aberdeen UK

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  1. Interesting - thank you Jeff. The Ti add-ons have a 60mm bore - larger than the Y-collector pipe. So a bit of expansion and the gas-speed is slowed down - that helps with noise control. If you combine both add-on dimensions together, it's a reasonably large silencer - it all helps. John's stainless add-ons have a 57mm bore - same diameter as the Y-collector pipe. Faster gas-speed but I used a bigger silencer - and those downward tips help too. It's ok static-testing but it's the drive-by which is important to staying out on track.
  2. Ach, I think my throwaway remark that the new guy "didn't like Lotus" got blown out of all proportion. I try not to post on forums these days as I get e-mails/txts telling me to "get my order done - stop posting on .......... wherever!" 2bular will ALWAYS have a range of Lotus exhausts - couldn't leave the market to the numpties! Who's going to design/build a manifold that achieves those gains? New batch of the 2ZR 4-1's already underway.
  3. That carpet cracks me up! What was it - a St Bernard? Glad the bigger diameter stainless add-ons did the job for you John - I know they're a bit fiddly to fit but a good spring-puller helps. Will find a supplier for those methinks. Snipe-nosed pliers are too awkward. Shorter/lighter stainless add-ons would probably be enough for a "noisy" day elsewhere - the downward tips are important though. Not sure if they'd be acceptable as a permanent fixture on a Road system? In the Evo-world, they're practically a necessity now - 500bhp is LOUD.
  4. Final dyno runs show a 32bhp gain over standard on the 220Cup car -
  5. 2bular's a profitable business. No debt, pays its suppliers and its taxes but I've taken it as far as one man can go. I'm INSANELY competitive and need to spread my wings. Be in no doubt - there will ALWAYS be a range of 2bular exhausts for the Lotus market. Demand worldwide is through the roof and this move will reduce the long lead times which is the only complaint I hear again and again. It can only be good for all concerned. I think the "no more Lotus exhausts" came about because I mentioned the new guy didn't like Lotus - but you don't turn your back on your current revenue stream!
  6. Had a 220 Cup fitted with the full 2bular system (4-1 + HJS catalyser + 8"dia system) on the Komo-tec dyno today to let Daniel do his stuff. I need a tune which can be e-mailed to clients anywhere - Komo-tec can do this. Available soon. Initial power gain - 227ps to 259ps - more details to follow.
  7. ummm, that's why I threw £400 of Titanium add-ons at you Jeff - get on with it man!
  8. It's the drive-by which gets you - and the valve will open below 5000rpm anyway. Bolt-ons? - ridiculous - but we'll see how they get on shortly.
  9. He He - one week to clear the order back-log, then I'm outta here!
  10. Can we knock the adoration for the 400 exhaust on the head please? With a 3" bore when the valve is "open", the boost drops so much, you lose 40bhp on the supercharged motor. Fitting it to the N/A motor is laughable. N/A's need to keep the gas-speed up right through the system for best performance - and a 3" bore isn't going to do that. Stupid Lotus dealers fit the Stg1 exhaust from the supercharged 2ZZ motor, to the Elise S 1.6, (because it has twin-tips!) losing all the torque (such as it is) - don't go down the same road.
  11. 63.5mm "track" systems have been sold all over the World for months now - first one was here - track add-ons were the problem for you - and as I say, R&D on them was just a PITA.
  12. It's different Chris - tooooooooootally different. The "Road" system (like yours), once the exhaust valve is "open" has ZERO silencing effect. I wanted this system to be the LOUDEST it could be - but with the option of quieter operation with the exhaust valve closed. The "Track" system was designed to remove all the extra weight of the exhaust valve and it's associated pipework - saved some 5Kgs. The silencing comes from using a different core-pipe - and .................. other features. There are NO packing materials to worry about. Anyone familiar with the supercharged 2ZZ-GE cars will
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