Briggsybriggs1 Posted March 22, 2014 Posted March 22, 2014 Hi as above iv just fit some decats and a cone filter to run along with my duplex exhaust system and my mpg has dropped to 20 from 26-28 , but the sound is amazballs now , is it normal to lose mpg after fitting breathing mods ? Sent from my iPhone using Tapatalk Quote
Grundy Posted March 22, 2014 Posted March 22, 2014 Sure you weren't just driving harder to hear the noise? I can still hit over 28+ driving sensible... 2 Quote
a2orry Posted March 22, 2014 Posted March 22, 2014 Tuning a bit out after fitting decat pipes running rich time for uprev. Quote
Bems Posted March 22, 2014 Posted March 22, 2014 I'm the same. Think you'll need a up rev to sort out the fuelling etc to improve it Quote
tatooandy67 Posted March 22, 2014 Posted March 22, 2014 i wish i could get 20mpg Me too I'm averaging 19 ish 1 Quote
The Chubby Ninja Posted March 22, 2014 Posted March 22, 2014 I don't even want to know what mine is doing, car says about 40 but in reality it's probably under 10 Quote
KyleR Posted March 22, 2014 Posted March 22, 2014 Full exhaust and pop charger here and still getting 25+ if I want. You have a heavier foot due to the noise, but perform an ecu reset to clear out the old data Quote
Briggsybriggs1 Posted March 22, 2014 Author Posted March 22, 2014 (edited) Thanks for the replays every one think I need a up rev now. It dropped to 22mpg after fitting the filter now after the decats it's 20mpg so think a up rev is needed now then. But am going to refit my OEM air box cos until it's done :-) Sent from my iPhone using Tapatalk Edited March 22, 2014 by Briggsybriggs1 Quote
techinstaller Posted March 22, 2014 Posted March 22, 2014 haha average 8 or 9 to the G and loving every mile 1 Quote
RobPhoboS Posted March 22, 2014 Posted March 22, 2014 Doesn't sounds quite right to me if you still drive the same as before. I get around 27mpg (was 28 before nismo spoiler). Worth getting a can of Wynns injector cleaner, spray some through, or get a bottle of stuff to add to the tank that cleans them as well. That usually helps me when they've not been done for a while. Also check tyre pressures are correct. + remap if not done. Quote
Briggsybriggs1 Posted March 23, 2014 Author Posted March 23, 2014 Video sound clip pls what's the best way to put a clip on here. Iv filmed one but can't put one on here ? Sent from my iPhone using Tapatalk Quote
Sam Mcgoo Posted March 23, 2014 Posted March 23, 2014 but the sound is amazballs now And that is why. You WILL be driving harder and holding the revs longer because you enjoy the noise. Worth getting a re-map though to get things running sweet. 1 Quote
tatooandy67 Posted March 23, 2014 Posted March 23, 2014 (edited) Video sound clip pls what's the best way to put a clip on here. Iv filmed one but can't put one on Sent from my iPhone using Tapatalk I think photobucket is the preferred option on here but like you I have not uploaded a vid clip yet Edited March 23, 2014 by tatooandy67 Quote
tatooandy67 Posted March 23, 2014 Posted March 23, 2014 Video sound clip pls what's the best way to put a clip on here. Iv filmed one but can't put one on Sent from my iPhone using Tapatalk I think photobucket is the preferred option on here but like you I have not uploaded a vid clip yet Just looked in help section Photobucket to post pics and YouTube link to add video clips Hope this helps, I'm sure someone will be along soon with a better answer if this doesn't help 1 Quote
lewistaylo111 Posted March 23, 2014 Posted March 23, 2014 im not great with aftermarket maps and things like that but best way to explain is that your car is getting rid of exhaust gases quicker and also with the breathing mod taking in air quicker therefore putting the map out making the air/fuel ratio go out as well causing your mpg to go down , like its been said before a simple map will soon re-cal your air-fuel ratio 1 Quote
Briggsybriggs1 Posted March 25, 2014 Author Posted March 25, 2014 (edited) Video sound clip pls here you go :-) just need to do a better vid it's taken me 3 days to get this one lol http://s1368.photobucket.com/user/briggsybriggs1/library/ Sent from my iPhone using Tapatalk Edited March 25, 2014 by Briggsybriggs1 1 Quote
Tricky-Ricky Posted March 25, 2014 Posted March 25, 2014 (edited) Interesting comments considering that everyone thinks that the Z ECU will dial out/not realise any performance improvements added, and if you say that adding a free flow filter and exhaust is allowing more air, and so using more fuel, then where is the resulting performance improvement?? Edited March 25, 2014 by Tricky-Ricky Quote
tatooandy67 Posted March 25, 2014 Posted March 25, 2014 Video sound clip pls here you go :-) just need to do a better vid it's taken me 3 days to get this one lol http://s1368.photobucket.com/user/briggsybriggs1/library/ Sent from my iPhone using Tapatalk Sweet sounds nice bet your pleased Quote
Briggsybriggs1 Posted March 25, 2014 Author Posted March 25, 2014 Video sound clip pls here you go :-) just need to do a better vid it's taken me 3 days to get this one lol http://s1368.photobucket.com/user/briggsybriggs1/library/ Sent from my iPhone using Tapatalk Sweet sounds nice bet your pleased yep mate it sound better when you open it up . Will post new clip when I get my head round posting vids lol. Sent from my iPhone using Tapatalk Quote
tatooandy67 Posted March 25, 2014 Posted March 25, 2014 Video sound clip pls here you go :-) just need to do a better vid it's taken me 3 days to get this one lol http://s1368.photobucket.com/user/briggsybriggs1/library/ Sent from my iPhone using Tapatalk Sweet sounds nice bet your pleased yep mate it sound better when you open it up . Will post new clip when I get my head round posting vids lol. Sent from my iPhone using Tapatalk Look forward to it No better sound than a sport exhaust with the taps open, are you still hitting 20 mpg Quote
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