Problems With Mpg

[crinks85]

hi just put a remus back box on my car, sounds and looks cool as f :censor: but my average mpg has gon down from around 30ish to 20-22. i wass expecting a bit of a drop but not that much. i did drive 20 miles without a back box on to go to a mates garage when i realised that the original exhaust bolts where part of th exhaust,i was gutted. could that of sent the ecu on over load or summet or should i stop complaining and enjoy the sound ?

[-T- Sport]

I have the TTE (Rebadged Remus) Backbox on my car and still average 31 Mpg. Not had any Mpg problems since I put it on to be fair...

Don't see how it would knock your Mpg down that much with just the addition of a backbox.

[crinks85]

i cannot understand why it would happen but i have done 100 miles and its just below half a tank. thats using lift every now and then nowt special, i was going to put an air filter on but this kinder puts me off , i will end up putting one on when i get some spare money but i will be averaging the same as a compressor !

[-T- Sport]

Well I have both the TTE Backbox and a K&N Typhoon. Ofcourse I love dabbling in Lift but my Mpg never drops below 27. £20 petrol usually gets me 150-160 miles.

Try resetting your ECU by removing the two 15 amp fuses next to each other in your fusebox. Might not do anything but hey, worth a go...

[crinks85]

i will give it a ago, what else does it reset

[-T- Sport]

Just the clock as far as I'm aware mate.

Radio doesn't need recoding or anything. it's usually used for getting rid of the three warning lights on the dash :P

[toweylowey]

just have another check on the fitting, make sure it's not blowing

the only other thing could be your puttin your foot down bit more to hear the sound lol

[Norfolk n Chance]

I have the TTE Back Box and an A'PEXi and average just under 30mpg

As Mike said check everything's tight and there are no leaks

[crinks85]

if reseting the ecu and the exhaust aint blowing, it must be me,i do like to hear it !, it also seems to be a bit better mid range 4500 rpm up over, not alot but you can notice it a bit, cost £60 direct fit, i think it was a good deal . just bought a viper induction (£160) couldnt let it pass , im a sucker for summet cheaper than what it should cost, so that aint guna help mpg ! cant wait to get it fitted

[-T- Sport]

Nice one.

[Omasis`]

the only other thing could be your puttin your foot down bit more to hear the sound lol

You read my mind, i had this same problem when i fitted my typhoon

[crinks85]

done a few miles now and the mpg average is starting to go up a bit, took out the fuses but dont thik that did anything,think it just drinks a bit more now when you put your foot down, well i will get used to it im sure

[cabcurtains]

My MPG improved after fitting the exhaust and induction kit!