where do u find all this extractor? dont know which shop to go to.

i think those branded shops are wee bit expensive..that is..N1 Racing,Speedworks,Amoil, Eneos, or you can take a look in the Hypertune magazine.They sometimes advertise there. But you can scout or ask contacts for those smaller shops..might be cheaper..or exhaust shops..might be cap ayam though..i am looking as well actually..

Thats expensive.....
get Zenden 1 and go to a workshop and ask them to install for u is cheaper instead

anybody know where can get zenden extracts?

Go to zth forums and find for kent20

Hurm, need some advice here on my exhaust system. I'm using a 1.3 efi satria, n i've changed the stock extractor to a zenden 4-2-1.When i did the change at the workshop, the mech advised to remove the cat converter to ensure the exhaust gas flow is not restricted, so i did juz that. The mech replaced the cat converter with a normal piping. Everything else was left at stock. Relatively I can feel the power at lower RPM (juz wut i was aiming for since i dont like revving high).

After a couple of days i found out that the noise is quite unbearable for me, so i went back to the shop and asked for a solution, n they said to add a bullet (some ppl call center muffler) to replace the cat converter that was removed earlier. I did juz dat n observed a reduction in the noise without any power loss, but the noise reduction was not as I expected. I was wondering if there is anything i can do to make the noise sound like stock again, while keeping (or better, increasing) my car's power?

This post has been edited by x800: Jul 6 2006, 12:51 AM

nice write by soulfly...gave me a good insight into mods. i m have just changed my air intake to apexi power intake and looking forward for more modifications.

i got some questions tho before i move forward :-

1) will replacing air filters and/or extractors affect the air fuel (AF) ratio of the car since AF ratio is oredi tuned for stock engine?

2) does this affect fuel injection engines? (i understand fuel injections have sensors to detect air volume from intakes & auto adjusts to condition)

3) after modifications such as changing air filter types or replacing extractors, is there a neccesity to retune the engine??

4) when is retuning of engine required / and in what conditions?

5) what are estimated costs for tuning an engine??

hope any guys can help answer my queries.

blueray

1) A/F ratio depends on ECU setting. Modification to the intake and exhaust might alter the A/F ratio but not that much, because ECU will re-learn the whole setup again. But then again... it depends on the ECU whether it's tuned based on a/f ratio only or it considers other reading as well.

For carb engine, it depends on the carb and engine setting.

2) For EFI system... the ECU will re-learn and adapt the new setup.

3) Not necessarily, but re-tuning with SAFC and wideband tuner could've been better.

4) Modification to the fuel system, like bigger injectors or such.

5) Proper wideband tuning sometimes cost around RM800-1k, depends on the tuner.... not including the gadgets that you install to tune your engine. Dyno tuning usually much more cheaper.

I just removed my CAT today...damn satisfied Tested with my frens car with stock exhaust...my car was ahead by 2 cars

How's the fuel comsumption after removing the CAT?

u removed the CAT?.. which means u running on direct pipe? exhaust modification is like trial and error cant really predect which is the best. My fren uses 3 muffler/bullet after the extractor and its sound just nice.. with added sport muffler tip, the sound gets sexier.. its just a Kelisa 1.0.. size of the piping, cant really remember.. i think its just slightly larger than stock Kelisa 1.0 pipe..

im using one of the extractor from wei yip its a 4-2-1 with twist in the end to play with the air n added bullet...the difference was very significant n very the satisfied with it... but now i need to kno what kinda air filter should i use since im drivin a 97 carb satria, i was thinking of tht whole open pod with covered box n pipings but was told on another forum tht it is just a waste of time....any recommendations as i really need more low end power n if got high end will also be a plus point....

well, i didnt notice any difference in fuel consumption..btw, i juz drive my car to and back from work which is only around 10KM per day



i ran on direct pipe for only a couple of days, then i installed a bullet...huyo ur fren uses 3 bullets..maybe i can try add one more too but $_$ thx for da advice

This post has been edited by x800: Jul 9 2006, 11:38 PM

dear sifus..

i just pasang an open-pod airfilter from simoto. however, i tak pasang the heatshield or anything else to prevent it from sucking hot air. question is, whats the impact on performance or FC for having the heatshield or air ram/duct?

btw, i drive a gen2.
thanks in advance.

I wanna know, is it actually illegal to remove the CAT?? Is there any sensors/actuators (i dunno how to name them) situated at the CAT?? And how does it affect ur FC? I need ur advice on tat

At this moment, in Malaysia, it is not illegal to remove the CAT.

As for sensors in the CAT, it all depends on the make of the car. Some only has 1 sensor before the cat, hence removing the cat does not screw up the sensor. Some has a second sensor in the cat or after the cat, which may trigger the check engine light after the cat has been removed.

In Malaysia it's okay to remove it...for my car dunhave any mechanical stuff...just the sensors. FC seems to be like normal...didn't test it out yet. But I think the FC will be abit better coz I dun need to press the throttle a lot to move coz now the throttle feels lighter

Yeah...I had to modify mine to fit. The sensor is attached to the CAT somemore

This post has been edited by egiewan: Jul 11 2006, 12:49 PM

Thank you very much for ur informations. Actually after reading good feedbacks from x800 and egiewan, m pretty much interested to remove CAT for my ride too. I'm driving a year 2000 Wira 1.3GLi wif mmc ecu. So, do have any idea about my car if i were to remove CAT, will i screw up the sensor??

Send your car to the experts la...exhaust jobs are trial and error stuff. Dun send to those Wei Yip kind la Where are u staying btw?

M from Miri, Sarawak.