Rev limiter

1. Tobias Infrequent Poster Joined: Nov 2009 Posts: 130

   #1 15th December 2009, 13:45

   Hi all,
   
   Do I need a single or twin coil setup for a rev limiter like this one here:
   
   http://www.omextechnology.co.uk/Revl...evlimiters.htm
   
   Thanks,
2. user_28622 Established Member Joined: Nov 2008 West Sussex, Worthing Posts: 1671 Golf TDI 130

   #2 15th December 2009, 13:51

   why dont you ask the site ?
3. Barry123 Saxperience Hardcore! Joined: Oct 2005 Aycliffe Posts: 32205 Saxo VTS

   #3 15th December 2009, 14:30

   The only reason I can think of for a user switchable rev limit is to protect the engine when it's started from cold... the Omex ECU will have a default hard and soft cut limiter anyway.
4. Tobias Infrequent Poster Joined: Nov 2009 Posts: 130

   #4 15th December 2009, 15:22

   Im actually after the rev limiter, launch control and shift light but there was no need to mention all 3 for the purpose of the question. I dont really even need to mention the rev limiter - im only interested in wether or not saxos are twin or single coil setup. I assume they are twin coil because there is no dizi, so a redundant spark must be present, though im not sure so I thought I would ask.
   
   Could email the company, though they may not know specific car coilpack setups
5. Spanky Saxperience Post Whore Joined: Dec 2007 Newcastle Upon Tyne Posts: 9578 Saxo VTS

   #5 15th December 2009, 18:10

   You needa twin coil setup mate, i have one
   
   When setting it up, set it to "2" cylinders, not 4,it tells you this on the instructions but just a reminder lol
6. user_27114 Saxperience Forum Bum Joined: Sep 2008 jarraaaaaaaaaa Posts: 3580 Mk2 16v VTR + Nitrous

   #6 15th December 2009, 18:35

   Purpose for this?
7. Boyes Regular Poster Joined: Apr 2008 Sheffield Posts: 276 Peugeot 106 GTi, Clio 172

   #7 15th December 2009, 18:38

   I've heard launch control can cause bad things.. and bangs.
8. Tobias Infrequent Poster Joined: Nov 2009 Posts: 130

   #8 15th December 2009, 19:02

   I dont see why... all it does is mean that you can hold revs at a certain rpm just like you would the torrle normally, except this is fixed. It also stops over spinning of the wheels as you pull away. What you heard may be to do with ALS or something perhaps?
9. Tobias Infrequent Poster Joined: Nov 2009 Posts: 130

   #9 15th December 2009, 19:20

   Quote:

   Originally Posted by Saxo_89 You needa twin coil setup mate, i have one When setting it up, set it to "2" cylinders, not 4,it tells you this on the instructions but just a reminder lol

   Thought so, thanks for clarifying
10. Boyes Regular Poster Joined: Apr 2008 Sheffield Posts: 276 Peugeot 106 GTi, Clio 172

    #10 15th December 2009, 19:31

    Yes holding your car at certain revs then letting it rev to full potential, Dan C had one on his Cherry gti before he sold it, said it made a loud concerning bang when he used it so was removed..
11. Tobias Infrequent Poster Joined: Nov 2009 Posts: 130

    #11 15th December 2009, 20:19

    The problem arises when you keep your foot on the throttle more than is necessary. It only stops the coils firing above a certain rpm so is not designed for foot down rev limiting, so the injectors still spurt out fuel. This means a hugely rich mixture, so could easily produce a bang as the excess fuel is burnt in the exhaust manifold. Has to be used properly, i.e. foot down on throttle only as much as is necessary
12. Spanky Saxperience Post Whore Joined: Dec 2007 Newcastle Upon Tyne Posts: 9578 Saxo VTS

    #12 17th December 2009, 16:39

    Quote:

    Originally Posted by Boyes Yes holding your car at certain revs then letting it rev to full potential, Dan C had one on his Cherry gti before he sold it, said it made a loud concerning bang when he used it so was removed..

    yes, he did, and he had it set to four cylinders instead of 2 (with it being twin coil) so thats probs why
    
    Mine doesnt make any loud bangs, probs as i have 8 less valves
    
    When you hit the limiter tho it bounces on and off about 10 times a second on hard cut, as i have the omex limiter set to 100rpm below the standard one.
13. Tobias Infrequent Poster Joined: Nov 2009 Posts: 130

    #13 18th December 2009, 17:37

    I will be using it on soft cut, which will start to kick in at the end of the powerband. The limiter isnt the reason im going for it though, its because of the other advantages!
14. Spanky Saxperience Post Whore Joined: Dec 2007 Newcastle Upon Tyne Posts: 9578 Saxo VTS

    #14 18th December 2009, 17:41

    yea, it starts to cut the spark gradually 100prm's before the set limit iirc
15. Sparco_Tom Saxperience Addict Joined: Jan 2007 Aylesbury, Bucks Posts: 12836 Yeaaahh Fiesta

    #15 19th December 2009, 22:54

    i might have a twin coil with launch control setup forsale, bored of mine already. only had it 3weeks
16. Tobias Infrequent Poster Joined: Nov 2009 Posts: 130

    #16 20th December 2009, 20:12

    Why are you already bored of it? No real gain? Was that the one bought off ebay for ~50?
17. Sparco_Tom Saxperience Addict Joined: Jan 2007 Aylesbury, Bucks Posts: 12836 Yeaaahh Fiesta

    #17 20th December 2009, 22:11

    Its a saxo ffs not a wrc monster. Its not difficult to keep traction and get a fast launch. I cant see the point of it anymore. I get a better launch without it