just some questions
1. will small pipe diameter increase the RPM of the car?
2. whats the best and cost saving setup for 4age (silvertop) engine?
1. No.
2. Cost saving setup? Whats your budget? My advice, just don't go for stainless steel. Galvanized steel should cut the cost and the more you cut the cost, the poorer quality stuff u get and u might end up spending more.
My 2 cents.
-Weng-
---------- Post added at 08:15 PM ---------- 6 hour anti-bump limit - Previous post was at 08:11 PM ----------
I just changed my 4-2-1 extractor and i hear a steely kinda sound when i accelerate...like masuk angin...but after checking the guy said it's like that because the air flow is more kau....anything i can do?? Please help! TQTQ
Hi bro, it sounded like it is a pinging sound in the car. Did u just change the extractor only? What ride? Some ride come with empty center box (no fiber at all). Please provide more detail :)
---------- Post added at 08:17 PM ---------- 6 hour anti-bump limit - Previous post was at 08:15 PM ----------
I just changed my 4-2-1 extractor and i hear a steely kinda sound when i accelerate...like masuk angin...but after checking the guy said it's like that because the air flow is more kau....anything i can do?? Please help! TQTQ
Hi bro, it sounded like it is a pinging sound in the car. Did u just change the extractor only? What ride? Some ride come with empty center box (no fiber at all). Please provide more detail :)
---------- Post added at 09:07 PM ---------- 6 hour anti-bump limit - Previous post was at 08:17 PM ----------
Yo,bro kweng84..you have answered all my question n appreciate it so much..one thing i'm not so understand what do u mean by "
we usually practise filtering the center box to accomodate full throttle power".filtering with what bro?sorry rof the noob question
Very sorry guys for the late reply, been extremely busy setting up my new pillar of business :)
So, basically what i've meant is to retain the pressure to what we call it delta pressure. With the good pressure, the exhaust pulses are pull even nearer when you go for full throttlling where power delivery is at the OPTIMUM side. Vice versa, if the exhaust pulses are loosing where u get backpressuring effect, then power delivery is being delayed and hence, u suffered from power loss. Hope my 2 cents help you :)
hello kweng, my setup for my 1.6 mazda lantis manual is currently hotbits 421,hotbits flat midbox,sflow muffler,using 1.85" piping.previously i was using midbox that had scales like protrusions arranged in spiral inside the inner tube, with steelmesh fiber now changed to straight type hotbits.
the weird thing after changing the midbox is during my journey up to kedah,i used trunk road through kuala selangor until ipoh,did a lot of overtaking yet the fc is blardy good,like needle wont come down.on the way back,i took highway all the way but fc becomes bad.hard to maintain at 140
before this,the spiral midbox gave some restricted feeling,hard to accelerate from 90-120 but stable at 140 with normal fc if i stick at that speed.now it accelerates faster but high fc at such speed and engine sounds like working hard.
need your input on this matter,other exhaust sifoo can comment too
Hi bro, it looks positive to me that you've changed straight flow midbox because it gives better flow and improves pick up. However, i spot something wrong is your s-flow muffler because SFLOW muffler has a few designs and some sflow doesnt have enuff blockage inside. Well, how do we know how much blockages inside? Is that what you're thinking? I usually knock on it and imagine ..haha.. for mufflers which aren't mine. As for mine, i operate them like post motem :P
For direct improvement on FC,
1st: You can use 1.7" piping (inlet around 1.65")..condition: dont use swirling bullet, keep your current muffler.
2nd: You can change your s-flow muffler to a more blockages (preferbly following Japan design with 3 tubes..i have it :) )
My 2 cents :)