Proper tuning is made under proper R&D and benchflow testing is one of it.


fish scale is neat, but sometimes it may leak as well

piping weld shows how skillful the shop worker is

This post has been edited by soulfly: Feb 16 2006, 12:50 PM

What is the stock type of extractor for B16A bigV? 4-2-1?

4 -1 if not mistaken. better top end power for the vtec

Bro, I agree wif ur custom airbox + cone/mushroom filter, shud be better than juz heat shield + open-pod. But u don't hv to make many hoses until the airbox look like an octopus

With proper calculation, estimate the net flow-area of the filter, u can provide one hose with about 1.5 times the filter's flow-area will do.

About the extractor, I'm not saying only the length matters, it also depend on how smooth the inner surface, and the bends are actually made to minimize resistance to flow n to accomodate all the fingers at equal lengths so as to produce equal flows through all the fingers. I hv seen some models hv curves available for estimating the optimum finger lengths.


This post has been edited by R40s: Feb 16 2006, 02:53 PM

dont forget you need to measure the CFM of air when your engine is at its peak, if you dont want to lose horses.

Anyone knows what brands are available in KL for knock-off Twin Loop mufflers other than the original Mugen. I know there is Datco for local brand. Is the quality good in terms of performance and noise level? Anyone tested it yet?
What other brands available?

cfm meter perhaps? dont know how to 'actually' do that, but i could tell the theory behind that.

how about ZENDEN extractor?

they are selling cheap. around rm200 plus or below.

Pinned for now and will be moving to the new subforum when ready.

a 4-2-1 extractor require how much thermal wrap?. Aftermarket thermal wrap is 7m length with 8 stainless steel clip.

zenden to me stands in between ciplak and the branded ones...i mayb wrong...

Zenden is most likely fall into 'accessories' category... same like Marco, F-1 Racing, Datco, Rimus (imitation of Remus) and various other generic brands that makes exhaust. I believe they stand for OEM replacement category instead of true performance.

which shop bend the best 4-2-1 extractor ?

any iswara 1.3 ab owner can list out that they mod for their intake and exhaust.... now i heard u all say custom made are not good.. so i think if want to change whole exhaust system i think i be stick to branded i guess
..

thanks...

This post has been edited by eng98: Feb 17 2006, 07:20 PM

there is 1 exaust specialist shop in puchong what is the shop name?

Where is it located? Opposite IOI mall or is it next to the college?

i think it's wei yip exhaust.

do u guys know, where can get ramspeed extractor ? n where is ramspeed shop

I am using Hyundai Accent 1.5 (A) (should be 4G15)

Need some "advice" on the intake and exhaust that i should buy/change

Extractor : 4-2-1 from Powerzone (last i heard it is RM800 right?)
Air Filter : Simota open pod (probably "tarik" it to bumper)
Exhaust Piping : ???
Muffler : ????

What/where should i get my exhaust and muffler (not too expensive la)
Btw, if i were to "mod" it stage by stage, which should i mode first? Intake or exhaust?
And, my friend said that Accent throttle body is much much more smaller compared with his Wira 1.5 (any effect on this?)

And, any comment on http://www.zerotohundred.com/newforums/sho...ead.php?t=26975 Zenden Bullet Twister?

This post has been edited by ed0gawa: Feb 19 2006, 09:11 PM

PowerZone's 4-2-1 extractor was RM400 the last time I ask for pricequote. You'll get two for RM800

For me, a step by step would be extractor -> air filter -> muffler -> camshaft -> piping.

The only problem for camshaft upgrades nowadays, none of the manufacturers seemed to bother making cams optimized for automatics.

I put piping for the last is because oversizing the exhaust piping does not do much. You could even feel power loss at lower rpm. Besides, you're on automatic. For automatic, the best performance mod is to gain as much power as possible from the lower till the midrange rpm.

For the muffler, maybe you could try look for 2nd hand Tanabe s-flow.... they're usually priced below RM400. For value setup, maybe you can get an 'F-1' brand muffler. It's kinda 'cap ayam' but my cousin had one of those last time... s-flow type with big 'stomach'. The sound is not noisy. And probably, you can remove the catalytic converter and replace it with bullet silencer to reduce more noise.