D.FYLAKTOS

G11: HEPU, Motul, Wurth, Repsol, Valeo, Mannol, Febi, Valvoline Also from an UK store suggestions .

In the first ''forum years" here in GR some guys told us that those emissions make the throttle to get some muck after long term use and must find a way to get rid of them. Thus that filter that i put, before i had a sponge which get dirty but i wonder: those emissions at first minutes won't help my cold start?

I will wait. Meanwhile take a look at this hose, in the end i put a small filter, suppose that hose brings the fumes from the combustion chamber to the throttle but for what reason? Is it really that sometimes brings dirt to the throttles centre plate?

82711: TC-6 installed but i had problem with the fuel sensor and didn't worked properly 83363: New fuel sensor installed 84372: ECU-chip update 84493: Coolant mixture corrections 84777: Iridium spark plugs 84844: Stock air filter box with flap installed Now i am about 84989 but i have faith in my instinct and my service notes, somewhere is a mistake i will find it no matter what! I have some good news from the vapours hose and the new clip from the coolant sensor (both crucial factors in cold start procedure).

12,2 ltr or 23,15 Uk mpg for normal city traffic in 6 'C. This is a (negative) European record, even some guys with 20VT turbo will beat me.

My Felicia from 2003 till winter 2020 had: Ecu-chip, BMC filter, only outside air for cold starts from a wide open hole, exhaust from A to Z at 48mm, stock MAP and Lamba sensor, stock spark plugs, metallic catalytic converter, two bags of tools and fuel consumption from 9,1-9,7 ltr or 31.04-29.12 mpg in city traffic (emission test OK). Suddenly the fuel consumption start to rise so after a phrenitis of 3 years at sping 2023 has: Ecu-chip update, Paper filter and stock flap for better cold starts, stock hole for air entry, exhaust from A to Z reduced at 45mm, new MAP and Lamba sensor, iridium spark plugs, new ceramic catalytic as the stock, one bag of tools but some weight from insulation and fuel consumption of 11,8 ltr or 23.94 mpg in a little bit bigger city traffic (emission test OK). The car then (same type of tyres-suspention as now) had better torque and Hp at medium-high rpm, now has them at low-medium, no check engine light, no error codes. According to logic the car would have much better Mpg but has NOT (tested via TC-6 and will old fashion way), he who will find the solution will take a place in paradise.

Today he have sun ant temperature 6 'C, the fuel consumption for a very normal traffic route House to Work was 11,8 ltr or 23,94 Uk mpg whick is worst than the other days with BMC gauze filter. It's absolutely unbelievable that my car does not like the stock air filter box and the Paper filter. After almost 3 years of searching-bying and installing new parts-checking notes-thinking-spending hundreds of euro plus money fie excess gasolune etc i am getting tired and my nerves are at the maximum level. If i was in NASA looking for a problem in a space mission i would be better than now.

Tenths of Millions of drivers are like me and if i say that turning back to the original air filter design and i got worst fuel consumption on city driving they will think that i am sick. If i would say ''i installed a cold air intake" they would tell me that ''this sucks hot air from hot engine bay etc" and yeah that's acceptable but a factory air box with factory paper filter and a protected 20cm plastic hose made the car running with richer mixture than before with BMC gauze filter, no flap mechanism, wide oped fresh air hole?

I just wrapped the hose between the air filter box till throttle and the piece of hose which is close to manifold, see those small hoses: https://en.wikipedia.org/wiki/Škoda_Felicia#/media/File:Skoda_Felicia_1.3mpi_Lump.JPG This was for protection from heat of the engine bay, can this small wrapping affects the cold starts-fuel consumption? How? The modification started at 2003 and till 2020 the fuel consumption at city traffic was very good, now in 2022 i can not blame those modifications and there is no meaning to say again and again why i did them. At Spring of 2022 things suddenly started to get worst about fuel consumption and it insane to put the blame for example on the Ecu-chip or the exhaust manifold wrapping that i did in 2003.

Results from using Stock air filter box (with flap inside), factory hoses (incoming air and air from manifold), Paper filter: 1) the 1st cold start of the day is one click Worst which means with previous combination the needle was going for few seconds at 1100 rpm and the was returning to 800+ rpm, now takes a little bit longer. 2) although the conditions these days in Greece aren't as before few weeks (now we have cold, light snow, lot of traffic from home to work but not so from work to home) the fuel consumption is one click Worst. 3) the second cold start of the day is ''bad'' as the previous, no improvement. 4) I have less noise on idle or light acceleration, very good feeling of torque on low-medium rpm but no test at high rpm because i have no road for test. I paid a lot of money for new air filter box (with the mechanism inside), spend time for installation with hoses etc and what i got?

Which NGK? I had some problems with them in the past. The pins on the relay box look very bad to me, did you spary them with contact cleaner?

Take a look the first part of this video, a 1300cc car with just an air filter. POD cheap, POD expensive and stock Paper filter Which is going to win on the Dyno?

22 years back i was younger with money and time to spend so as for "air filter" i have tested: Stock paper K&N and BMC gauze POD (we call them Cone) gauze or metal mesh or foam. Air intake (plastic). Stock air box filter with flap and without it, with one or two aif feeding hoses, with 2 holes without those hoses,with POD inside. Power in Dynamometer or 0-100 km test, ok so what is the gain for an average (daily driver) ? For me all these years was Noise, Low rpm lag, more gas spend, some power on high rpm useful mainly in mountain routs. My exhaust (from manifold and back) is now on factory diameter, passes the sound-emission test.

K&N Air Filter VS Stock Paper Filter It's not very well made video (light conditions etc) but the guy did a fuel consumption test, the results after two trips with each filter were: K&N: 651 + 630 = 640,5 Km Stock Paper: 682 + 716 = 699 Km

K&N RESPONSE TO MASS AIR FLOW SENSOR CONCERNS We are aware of the "urban myth" created by a few dealerships that a vehicle's MAF sensor can be contaminated by K&N filter oil. No evidence has ever been provided to support this "myth" and years of diagnostic testing by K&N has shown that not only is this allegation not real, it is not even possible. https://www.knfilters.com/maf/massair.htm

The first thing that you say to a mechanic (when you go for 1st time) or some times he ask you first ''is your car mammyish?'' or ''what you have on it?'' and many times refuse to involved if you have made serious modifications. Some mechanics have repair-shops which advertise what they offer, prices etc for stage 1 till 3.This is for N/A cars, the turbo guys are different story and have their own rules. Here in Greece when you modify a car more than the stage 1 then as we say here ''you are married with it'' because you can not sell it and only another ''crazy'' guy will buy it since the every day driver is afraid to buy such a car. Today i couldn't take a proper fuel consumption measurement, we have cold weather, light rain and a lot of traffic, i really want to see what's going to happen with the Paper filter.

I just began measurements with a paper filter, it's not new, i have been use it for few months only. As expected it's quiet in low-middle rpm and gives a better feeling of "torque" at low rpm but let's wait till the TC-6 says at the end. Except the Ecu chip, the air filter i have a custom exhaust from A-Z which means from manifold (wrapped) and catalyst till the tail pipe (45mm diameter) and iridium spark plugs. According to the Greek mechanics argo my car isn't "stock or mammyish or normal" ,it's in 1st stage. Here the N/A cars 4 stages.

In city traffic i think would be more than this amount due to the hotter engine bay. Day by day i am starting getting distance from gauze filters, their maintenance does not suits me any more.

Another video with AEM intake and AEM Drop in Air Filter Replacement for OEM Airbox. The second is the AEM 28-50041 DryFlow Air Filter, No oil required. https://m.media-amazon.com/images/I/71AOx3WmN9L._AC_SL1500_.jpg https://m.media-amazon.com/images/I/81WkAlUsveL._AC_SL1500_.jpg is this like the Sprint filter? The result? One of these is 2,66 % worst on fuel economy.

Paper filter, K&N gauze and No filter at all. Yeah, more horsepower with K&N but what about fuel consumption? muck on the throttle? particle retention? Real life conditions isn't as prefect as in a Dyno room.

Dimensions are: 27,4 x 18,4 x 3 cm

Nor Felicia.

Greece is not USA on that matter, i bought the BMC filter many years ago and i don't have the receipt or the box (was before 2005, no forum-era, no e-bank records etc). IF (i say ''if'') they accept it back to the store they will tell me that will send it back to the manufacturer, this will take lot of time and when they have an answer they will call me but i know that nothing is going to happen. They put the blame on me (you expose it to direct sun, you didn't use the proper soap, you dropped it down, you glue it with inappropriate glue etc) and ''case closed''. The fitting was gently as with k&N or the paper filter that i have used, no extra push etc but when i removed the upper part few days ago the frame starter to fall apart ! The main frame of this filter was so fragile that i have lost the amount of detridus which were inside the air box. Was like cheap foam which gets dry all falls apart lin every touch. 2 times with different brands exactly the same problem plus every time when i was removing it lot of trouble to wash it-let it dry for a day-spray it-wipe the excess-check for spots which don't have oile-wipe again and back to the car. No oil area? no good filtering. Too much oil in an area? Drops back to the MAP sensor. Gentlemen, i think i am done with the gauze filters.

https://calsport.co.uk/bmw-s-1000-r-naked-14-16-2016/sprint-filtersprint-filter-p08-performance-replacement-air-filter/pm93s This is it? 90 euro + shipping?

The K&N filter plus the cleanong kit was bought from the only authorized seller at that time. The BMC from a parts store (not from ebay) and the guy found the code for my car from a BMC catalogue in front or me. Both had exactly the same isusue, the frame start falling apart, in both of them i used glue for plastics but in both of them after a while pieces started to detachmnent. In BMC some pieces stuck lige gum inside the filter box and another piece is missing because i throw it away plus there were many tiny pieces like fragments. With such kind of support the frame has gaps and air unfiltered passes through.