'A increase in fuel pressure will cause your car to produce a flame'

1. logic_guy Saxperience Forum Bum Joined: Nov 2010 England Posts: 3423

   #1 6th December 2011, 20:36

   I arrived at work this morning while everyone was outside and had my s/s manifold on. One guy said to me 'Does it have fire coming out the back' I laughed at him and said i'm not into that stuff, i don't care.
   
   Then he goes on to say adding a 4 bar fuel pressure regulator will throw more petrol into the engine, this causing it to flame. I explained that i don't think it will work because the lambda sensor in the exhaust will adjust the fuel rate on the ECU, so you will achieve nothing.
   
   Can someone confirm what i'm thinking is true?
2. Pricklep Saxperience Hardcore! Joined: Mar 2008 Posts: 31279 Citroen Saxo VTS, S60 D5

   #2 6th December 2011, 20:40

   Why? a Citroen Saxo doesnt need to spit flames.
   
   ^
3. Gabbastard Saxperience Post Whore Joined: Dec 2002 United Kingdom Posts: 8390

   #3 6th December 2011, 20:42

   on normal conditions, the lambda will try to trim out. At wot, there will be a bit more fuel dumped in yes, as lambda is disregarded.
4. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

   #4 6th December 2011, 20:47

   Mine vts shots lil flames on the odd gear change if i drive it very hard but the limiter has been lifted to 7800rpm aswell so i just wave bye bye to my followers
5. logic_guy Saxperience Forum Bum Joined: Nov 2010 England Posts: 3423

   #5 6th December 2011, 20:52

   Quote:

   Originally Posted by Gabbastard on normal conditions, the lambda will try to trim out. At wot, there will be a bit more fuel dumped in yes, as lambda is disregarded.

   Thanks!
6. yr51ocw Frequent Poster Joined: Oct 2005 Posts: 751

   #6 6th December 2011, 21:29

   gabb is correct, but the downside is that you will likely reduce WOT performance
7. Pug106-GTI Frequent Poster Joined: Apr 2010 Kent Posts: 755

   #7 6th December 2011, 21:42

   Quote:

   Originally Posted by Cam Mine vts shots lil flames on the odd gear change if i drive it very hard but the limiter has been lifted to 7800rpm aswell so i just wave bye bye to my followers

   does this not put strain/stress on the cam followers mate
8. boz Saxperience Post Whore Joined: Jan 2005 somewhere on this planet, doing something..... around northumberland or in the middle of the sea Posts: 8774 Mk2 VTS track mk1 turbo vts scooby engined 2CV

   #8 7th December 2011, 11:28

   most chip wizards remaps have the rev limit raised to 7.8k, any more and i think you need to run solid lifters and or stronger springs. best results i have heard of were from the ecu i just sold the other month, wayne mapped it and got 163bhp from it, cams, c2 vts head, uprated air filter setup, manifold, de cat and full system. it was of falcus's car from back in the day a canny few years back.
   my old vts used to pop flames when you were gunning it when hot and also when you were down shifting, she would pop and fart like mad, that had a bigger fpr on it, manifold, de cat and a single box exhaust. just unburnt fuel burning off in the exhaust
9. leighk18 Frequent Poster Joined: Nov 2009 stafford (hixon) Posts: 743 red mk1 vts

   #9 7th December 2011, 18:37

   Hmm my old vts rev to 7.800 so was not as standedd as i though
10. titchster Saxperience Forum Bum Joined: Jan 2008 Down't road from Sheffield Posts: 4641 Was:16v 106 XS ..... Now: Import 1.8 MX5

    #10 7th December 2011, 19:04

    Some will spit flames with just a decat. I know my old 16v used to on upshifts and if I tapped the throttle while over 6k.
11. NismoSteve Frequent Poster Joined: Dec 2011 Thorne+Grimsby Posts: 717 S2GTi / Megane cc

    #11 7th December 2011, 19:47

    it will kill the cat in no time.
12. Cam Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.

    #12 8th December 2011, 02:51

    Quote:

    Originally Posted by NismoSteve it will kill the cat in no time.

    He ant got a cat..