CTR cam VS SIR2 cams

[EKIV]

Hi , want to ask about the cams ..
is there any difference btw CTR and SIR2 cams ?
any improvement in terms of performance ?
also , if change to CTR cams , need to change the valve spring or not ?
furthermore, just one popular question .
if change to CTR cams , then the ECU need to progammed as CTR or still the SIR one ?
thanks deeply .

[Weq]

its been covered before.
To take advanatge of the cams u will need a new valve train to cope with the higher revving. You will get a very mild increase in performance with a stock revlimit though.

You will also need to remap ur fuel/iginition curve to cope with the extra revving/altered airflow, hence at minimum a piggyback device with programmable and extended fuel maps is needed.

[LatinoHatchCrap]

performance wise it all depends on the whole package you have and not just the cams but generally speaking CTRs are the most agressive oem cams Honda makes. ITR valve train should be done as well as insurance. Tuning will be a must.

[Setanta]

There is a huge difference. You will need to upgrade the fuel managemant and valvetrain.

Search is your friend :)

[EKIV]

thank you for your reply ..
I would like to ask what is valve train actually .
how much would that cost roughly .
thanks again ..

[LatinoHatchCrap]

Valve train refers to the cylinder head components which take part in the combustion cycle; www.howstuffworks.com is your friend :)

[Setanta]

valves and springs need to be upgraded.