help po!! backfire!!!

**chielout** · July 6th, 2009 01:02 PM

ser niky ano po ung catalytic converter? and mataas po ba dapat octane rating sa SiR? and mejo maingay nga po engine..pero bago na po spark plug and ok na naman daw po ang timing...tolerable pa nmn ung pag back fire kasi paminsan minsan lng nman..kaso nkakahiya pa din kasi pag birit mu sabay magbaback fire db? hehehehe..

**chielout** · July 6th, 2009 01:13 PM

Originally Posted by jemsonabrigo

Set your fix or base timing you would have to short the 2-PIN SCC (service check connector) located at passenger side right kick panel. It will assure that your ECU timing is starting from base calculation. Spark advance will adjust properly if ECU base timing is set correctly. for further assistance, jemsonabrigo*yahoo.com or jemsonabrigo*gmail.com Regards

ser kaya po ba ng DIY yun?? nakalabas na nga po computer box nito...2nd hand ko kasi nabili yung kotse..

**niky** · July 6th, 2009 06:36 PM

Is it noisy at the engine end or the muffler end? If it's the muffler end, that's just your exhaust. If it's nosiy at the engine end, there are a whole lot of things it could be... exhaust manifold leak, improper timing, etcetera... best to have a mechanic check it out, as it's difficult to diagnose it online.

**hilldweller** · July 7th, 2009 10:55 AM

Freeflow muffler = backfire, malakas sa gas by 15%, bawas low end power.
Baka may singaw ang exhaust pipe at lean ang a/f mixture. Manotice mo yan kung lean ang mixture, mas malakas ang hangin na lumalabas sa exhaust pipe kaysa kung rich a/f mixture mo.

**chielout** · July 7th, 2009 02:43 PM

thank you ser niky....

ser pano malalaman pag may butas ang exhaust pipe? d ko po lam kung free flow ung muff ko eh...RSR po...jasma po ata...ano po ba yung free flow?

**niky** · July 7th, 2009 07:34 PM

If you can look through the muffler and see the exhaust pipe on the other side, that's straight through.

Most performance mufflers have a straight pipe inside, surrounded by sound insulation. Stock mufflers, on the other hand, look like rat mazes, with walls (baffles) that redirect the exhaust and reflect the sound around inside the body (can).