Quote:
Originally Posted by johnscales
Firstly, I'm glad to see people are still on here and thanks to all of you tuned in.
Have filled up my tank and average mpg was 24mpg at the point of filling.
I wouldn't disagree with anyone whom has posted at all but the only thing I could say in response is this.
Taking the general consensus of replys all have mentioned, there being any number of things that could impact my findings, this could well be true. However, none of those things seemed to impact a consistent 17 - 21 mpg for the past 2 years other than solely my custom tuning efforts. I had a horrid 14 -15 mpg for a short amount of time with one tune but soon changed the tune. Otherwise tem changes between Summer and Winter should have influenced my mpg.
Nothing otherwise has changed since my previous spark plugs were in. Same journeys same petrol station (I always use the same one. Always.). Same average amount of pulls per tank of fuel and the same map which gave me 25 - 28 mpg on the old plugs. While not 'Lab tested' it is 'real world'.
Mpg has been consistantly between 17 and 21 for the past few years (trust me I have been anal with noticing this).
Also you have to remember that every car is different and that most of us got the .022 figure from someone else whom was happy with the results it gives along with which ngk plugs to use. Namely, you get good power without misfires.
I'd wager that those same guys whom found this to be a good gap for our motors were not looking specifically at fuel consumpsion either. Rather power levels without misfires.
I'm not looking to start an argument with anyone, just calling it as I experience it. Thanks for all inputs they are welcome and give good pause for thought.
ps
Just found this thread very useful :
https://*********************/thread...54.3718/page-2
Will be adjusting to .024 and going again per #38 thru #40.
Cheers guys.
Seems I can't post other forum names. It's an SS site thread. |
This is very interesting and I think you may be on to something. My previous N54 always got OEM Bosch plugs and ALWAYS got 23.7 mpg on the Dinan stage 2 tune, for years.
My current one is normally on full e85 and I run .018 gap on NGK 97506 I'm on stock Eldors. Runs and idles great.
Recently had a custom 93 oct Wedge tune made that's very conservative (similar to Dinan) so I switched to 97968 and gapped them to .022 and I can't seem to crack 21mpg. I'm gonna try widening the gap or going to Bosch plugs and see if that changes!