More Farting With Standard Fanimold

1. Spanky Saxperience Post Whore Joined: Dec 2007 Newcastle Upon Tyne Posts: 9578 Saxo VTS

   #1 21st January 2010, 14:17

   hey guys.
   
   Well sadley my much loved 4-1 manifold snapped in half last week so ihave had to revert back to a standard mani, boooo.
   
   I can certainly feel the difference in power, the car is alot less responsive but im just going to leave it like that untill the turbo conversion.
   
   Anyhow, since having this put back on the ca is poping, banging and burbling ALOT more than with the 4-1... anyone car to explain why this is???
   
   Surely you would think it would be more poppy with the 4-1 rather than the standard manifold.... i base this on it poping once on up & down changes with the 4-1 and roughly 3-4 times (and louder) with the standard mani...
   
   also it pops when just reving to 2k
   
   Full SS race pipe and SS backbox also fitted....
   
   any idea why this is guys
   
   Fankooo
2. Stevo123 Established Member Joined: Apr 2009 Redcar Posts: 1971 2000 Posi Blue vtr

   #2 21st January 2010, 14:23

   Could be a bad gasket seal sucking air in? Can't think of anytrhing else off hand thou
   gh
3. RustySkull Saxperience Post Whore Joined: Oct 2009 Basildon And Corringham, Essex Posts: 5179 MK1 Focus RS, Discovery TD5, Renault Trafic 2.0

   #3 21st January 2010, 20:21

   If you have no leaks, it's most likely due to the Engine being used to your old set up, when you had the 4-1 on the Engine used more fuel because more gasses were able to get out therfore the ECU put more fuel in. Now you've changed it back it no longer needs that fuel but it is still putting it in, thus the popping and banging.
   
   You'll most likely find it'll settle down after a while as the ECU sorts the fuel out.
   
   I've had simular things as I'm always changing Manifolds and Exhausts on my car
4. Barry123 Saxperience Hardcore! Joined: Oct 2005 Aycliffe Posts: 32205 Saxo VTS

   #4 21st January 2010, 20:28

   I'd have thought there would be a leak in the gasket (are you using your old gasket?).
   
   Otherwise, it'll be the fuel trims set on the ECU, the Lambda is closer to the exhaust headers on the standard than the 4-1 and as a result there is a slight 'lag' between the tweak being made and the ECU actually registering that 'tweak'. So the fuel trims are adjusted as a consequence. If you can reset the ECU then do that, else you'll have to wait for the ECU to gradually readjust.
   
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   1 user thanked this post: Spanky
5. Spanky Saxperience Post Whore Joined: Dec 2007 Newcastle Upon Tyne Posts: 9578 Saxo VTS

   #5 23rd January 2010, 16:55

   thanks Ad's
   
   its had all new gaskets and a new "O" ring put on....
   
   Its been liek this for a week now and still doing it...
   
   meh, i like it and my fuel consumption is a tad better so all is ok, was just wondering
6. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

   #6 23rd January 2010, 17:08

   may aswell just leave it till you go boosted dude, what have you done with your 4-2-1 btw?
7. Spanky Saxperience Post Whore Joined: Dec 2007 Newcastle Upon Tyne Posts: 9578 Saxo VTS

   #7 23rd January 2010, 17:26

   yea im just leaving it, was going to look for another manifold but no point really.
   
   my old one got scrapped, the end which connects to the centra pipe had snapped about 3 inchs up and was like a rusty bean can!!
   
   why do you ask??
8. Barry123 Saxperience Hardcore! Joined: Oct 2005 Aycliffe Posts: 32205 Saxo VTS

   #8 23rd January 2010, 17:26

   It'll take about 500 miles to fully sort itself out man, so don't worry too much if you don't cover massive mileage
9. Spanky Saxperience Post Whore Joined: Dec 2007 Newcastle Upon Tyne Posts: 9578 Saxo VTS

   #9 23rd January 2010, 17:28

   Quote:

   Originally Posted by adsayer It'll take about 500 miles to fully sort itself out man, so don't worry too much if you don't cover massive mileage

   ok then mate, was just wondering, it doesnt bother me, i kind of like it lol
10. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

    #10 23rd January 2010, 17:34

    Quote:

    Originally Posted by Saxo_89 yea im just leaving it, was going to look for another manifold but no point really. my old one got scrapped, the end which connects to the centra pipe had snapped about 3 inchs up and was like a rusty bean can!! why do you ask??

    no worries mate, just got a mate looking for a scrapper to chop up and make a turbo mani.
11. Spanky Saxperience Post Whore Joined: Dec 2007 Newcastle Upon Tyne Posts: 9578 Saxo VTS

    #11 23rd January 2010, 17:39

    Quote:

    Originally Posted by blackie_2k5 no worries mate, just got a mate looking for a scrapper to chop up and make a turbo mani.

    yana i thought about asking for it back for that exact purpose lol
    
    ill ring chris and see if he still has it, probs not but worth a try
12. blackie_2k5 Saxperience Hardcore! Joined: Oct 2008 Birtley Posts: 22253 VTR Turbo, 106 xsi track slag, Transit recovery, B

    #12 23rd January 2010, 17:43

    if he still has it just keep hold of it mate, get someone to custom you a mani out of it, if not ill see if my mates still looking