RoSsSr16v Posted June 16, 2007 Share Posted June 16, 2007 well ive booked the car in the morning to canavansalloys 4 me custom ss decat pipenot sure if anyone on uksc has one already fitted but will let all u other fellow n/a boys what power difference there is incase anyone is maybe thinking of getting one and wondering what difference there will be for their n/aWill report back asap Quote Link to post Share on other sites
Stevie B Posted June 16, 2007 Share Posted June 16, 2007 nice one mate, keep us updated S. Quote Link to post Share on other sites
oli_h Posted June 16, 2007 Share Posted June 16, 2007 i got a whole system made up the other week with decat pipe and no mid box, its well loud but sounds good and it helps the car breathe a bit better, just make sure you disconnect your positive terminal for half hour then when you put it back on the car goes in to self learn mode and it will notice less restriction Quote Link to post Share on other sites
Idrees Posted June 16, 2007 Share Posted June 16, 2007 Sounds good, looking forward to it Quote Link to post Share on other sites
RoSsSr16v Posted June 16, 2007 Author Share Posted June 16, 2007 thanks oli, i will disconnect now, wasnt sure if i needed to do that but i will take your word for itsounds abit loud but not too much, nice note when u put the foot down with just the standard tte backboxalthough i havent recieved any kind of performance changes as if yet, i will disconnect my positive for half hour as Oli has saidand hopefully that will make abit of a difference, cheers oliRos Quote Link to post Share on other sites
Sparky Posted June 16, 2007 Share Posted June 16, 2007 Im going to have a 2 inch boxless system made from the manifold back, should help the car breathe better and makes some nice flames Quote Link to post Share on other sites
RoSsSr16v Posted June 16, 2007 Author Share Posted June 16, 2007 hehe i like your style sparky Quote Link to post Share on other sites
Sparky Posted June 16, 2007 Share Posted June 16, 2007 You knows it Quote Link to post Share on other sites
RoSsSr16v Posted June 16, 2007 Author Share Posted June 16, 2007 here sparky do u know much about this putting the ecu into learn mode?? lol Quote Link to post Share on other sites
Sparky Posted June 16, 2007 Share Posted June 16, 2007 Heard alot about it lately but not sure to be honest Maybe it adjusts the amount of fuel being put thru as it has to reset itself not sure though Quote Link to post Share on other sites
RoSsSr16v Posted June 16, 2007 Author Share Posted June 16, 2007 ok mate no worriesi took the positive off for about 45mins and stuck it onthen started the car and its just seems the same as beforewhere is Oli when ya need him Quote Link to post Share on other sites
oli_h Posted June 16, 2007 Share Posted June 16, 2007 i dont think ive spat flames yet but i want to Quote Link to post Share on other sites
rob_bower Posted June 16, 2007 Share Posted June 16, 2007 you could ask J18RSA he hsa full mani back 2" system on his!!! Quote Link to post Share on other sites
lobotomy Posted June 17, 2007 Share Posted June 17, 2007 Im going to have a 2 inch boxless system made from the manifold back, should help the car breathe better and makes some nice flamesRemember N/A's still need backpressure or you could actually see a performance drop Quote Link to post Share on other sites
Jozinobi Posted June 17, 2007 Share Posted June 17, 2007 Remember N/A's still need backpressure or you could actually see a performance dropI found a fully boxless system lost most of the power and torque throughout the rev range.Yes the revs do rise quicker but you are not going anywhere far soon.There is a need for a little restriction in an n/a exhaust system especially in one as low powered as us n/a starlets.I did a lot of reading up beforehand on pros/cons and also gained some valuable info and experience from watching my zorst getting done and also asking them stuff and making sure I got what I wanted done. No way would I leave them to it.The term is 'exhaust scavenging', exhaust gasses need time to scavenge in order to make useable power, if they just being farted out as soon as possible they have no time to do this scavenging hence the lost of backpressure, altho backpressure is an overused term in itself.So its best im my opinion to leave at least one restrictive box in there be it the cat or one centrebox.By all means experiment, I know the majority of people will want to decat more than anything, try a decat and take all boxes out, see how it goes, if it runs like crap as it should do, get a centrebox added which wont be difficult or expensive. You could even tell the zorst place to still include a centrebox in your package or use your old centrebox, but just say you want to try it out boxless, and if its not good then come back for a centrebox. This is what I did and returned to the zorst place the very next morning as it was waaaay to loud and also it ran like crap as there was next to no torque anywhere. I would like to say that my exhaust system is a lot more freeflowing than others so I felt the loss of torque and backpressure much more severely, the addition of a centrebox changed this. The more freeflowing an n/a exhaust is, the louder it will become. I hope my experiences help a few people out.Let us know the progress with your decat Ross and whether you got any noticeable gains out of it. Give it a little more time.Moved to technical for further discussion.Joz Quote Link to post Share on other sites
Sparky Posted June 17, 2007 Share Posted June 17, 2007 Good write up Joz Think I will go for the straight through for now and see how it goes Quote Link to post Share on other sites
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