QUOTE(Ridt_Henshin @ Oct 8 2011, 07:46 PM)
hi , i own a peugeot 206 1.6 16v AUTOMATIC transmission
current mod is
1)4-2-1 extractor (custom by JFA)
2) k & n drop in filter
3)topcat muffler s flow, piping 1.6 mid and 1.6 end ( all done at everco)
recently done decarbo as mileage is 90K ++ . after all this i fell really
minor improvement. response only better. about performance... still cant really tell. top speed still same..after 150km/h going to 160 170 180 190 takes a while..especially past 170... top speed now is at 180, 190 after a waiting for a while. was looking to get to the 200 area...
im thinking of getting k & n typhoon from my friend. (now using 2.0gti)
he has dyno charts proven that the combination of this typhoon and extractor has impressive gains.
what are you opinions?
will it work well? compared to my drop in.
my dyno chart by jc racing on wheel is 85.01 and 13.12 torque. torque comes around 2k plus. 0-100 is decent i guess for an automatic..
dyno chart is before k & n typhoon. and my next step is
1) denso iridium plugs IKH20
2) k & n typhoon
3) unichip q
anything u guys can recommend besides this? as im gonna unichip last. and im not sure i post in right section. if wrong please move tq
*camshaft and polish is too expensive n not worth it for auto gearbox. anything else ?*
i'll sum up my point of view to help u choose better
IMO, the pipe size is good enough for an auto so what u can do is swap that s-flow muffler to 1.6" big body straight flow muffler, dont use bullet style muffler as the noise could be unbearable, big body muffles a lot better. Also dont get 2" straight flow because its not efficient, people might say its ok but i dont think it is coz 1.6" expand to 2" will slow the exhaust down by a lot and cause turbulence thus backpressure, this disadvantage is more obvious at higher rpm / higher speed when everything in engine is moving really fast where 1% difference could be felt
also its good to know the primary pipe size and length of ur custom header so u could get the exhaust port / primary size ratio. most aftermarket header here will give u racing spec primary pipe size which does not work below 3k
before u decide on getting typhoon, compare the internal volume of typhoon intake and ur airbox, the one having most litres are the winner for ur auto and presumably a daily car, because more litres mean u'll have plenty of air reservoir stored for better take-off acceleration so if in any case the header lowers the low end torque, u got airbox to counter balance and boost it up, powerband is flatter and wider, not peaky and narrow
i have studied extensively enough to say that if the airbox design has a substantial restriction in the first place, no aftermarket drop in can help u gain noticeable power gain. basically decreasing airbox intake restriction will give a gain of approx. square root of pressure difference, in other word, decreasing intake restriction by 50% (making pressure difference bigger) will give u gain of 6-8% ponies.
Enlarge the snorkel pipe and airbox inlet if u feel there is a choke at higher rpm. typhoon might work on ur friend's car but does not mean it will work on yours. compare the rpm powerband between ur engine and his gti. usually high rev engines will benefit a lot more from open-pod style than low rev engines. open pod style on bigger engines will have more benefit than smaller engines because bigger engine has bigger torque to begin with so any low range power drop will not be as sufferable as small engine on open pod
i personally think using more expensive spark plug does not give u any noticeable gain in power except it will last longer for easier maintenance. Peugeot and all manufacturers must have "superior fuel efficiency" to meet the marketing target so i dont think they will cut a slack on combustion efficiency. Unlike exhaust and intake where noise regulation applies that engine efficiency has to be compromised. So the stock plug must have enough characteristics to give complete combustion on stock engine, anything more is not necessary unless u do something to the engine i.e. increasing the cc or something. Using expensive and higher quality engine oil will definitely increase hp and torque but not on the plug so no point using expensive plug if power is what u after.
no comment on unichip coz i havent got the chance to enter air fuel tuning world yet
but an advice from old timers ive got is always try to get the best tuner to do it and saves cost and more worth it. dont cut budget on finding pro tuner.
QUOTE(luqmanz @ Oct 9 2011, 02:06 AM)
I just read the article that says longer ram-pipe equal to faster power generation .. the article says nothing about tuning the length (exhaust style) .. however I think the gain there is because of the speed of air-intake .. air in longer pipe flow faster than air in short pipe ...
I suspect the result could have been better with a properly tuned length..but wonder if this is even possible LOL ...
he didnt do the exact calculation but when different pipe length was dyno tested, i reckon it is safe to conclude from the article that the length achieving highest hp is probably closest to the tuned length intake for that engine.
proof is he tested up to 100cm intake pipe length but 60cm pipe length wins the dyno so there has to be a reason why 60cm wins despite air travelling in 100cm pipe should be faster.
what we need to do is to find out how that length is derived with maths equation and generalise it to apply to all engines - reverse engineering
This post has been edited by upontheriversky: Oct 10 2011, 06:25 PM 
Oct 8 2011, 07:46 PM
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cnt feel the pull.. especially when holding gears
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