[quote=jfk][quote=Whiteysback]“There is no ECU correction factor for the AFR under load in the Lotus tune…”
Good God … Another one !
Q.What do you think the MAF is monitoring ?
A. Airflow … it senses increased flow and adjusts fueling…this is why I,m running richer than Boothys which has an identical ECU …
Bloody flock of sheep … [/quote]
Lol, sheep or not u are wrong, as ive already said and as has John at JSR the only corrections the ecu can make on closed loop (WOT) is knock control. The MAF adjusts jack shit on closed Loop.
To be completely honest it should but don’t believe everything Jim has to say because I’ve proven him wrong more than once and he failed to respond on Seloc…
Have Wayne do a few tweeks and you’ll be golden…
Cheers
My reason for the comment about Seloc:
Jim and I had a debate on header design at the time…He redesigned the headers since…
And my answer to the question: You will need a retune to take advantage of the headers flow…it will not tune itself.
And to his video : It still looks a little lean when you first nail it… The rpm range between 4,600 and 5,800 is still too lean from what I can “hear”…
I would want A/F not to exceed 12.2 under load, tip in should drop into the high 11’s… Remember it’s cold outside come summertime things will be bad with those ratios…
History…in 2005 I was the first guy to install a great set of headers on my then N/A Elise in the US, I had a instant gain of 12 whp and 10 ft tq. on the dyno. Six weeks later same dyno all the header gains were gone…
ECU correction in action…
[font:Impact]Why do you think we cracked the ECU ?[/font]
This was a good decussion and hopefully everyone now knows that headers do make improvements but the car must be retuned to take full advantage and “keep” those gains intact…
[quote=Whiteysback][quote=jfk][quote=Whiteysback]“There is no ECU correction factor for the AFR under load in the Lotus tune…”
Good God … Another one !
Q.What do you think the MAF is monitoring ?
A. Airflow … it senses increased flow and adjusts fueling…this is why I,m running richer than Boothys which has an identical ECU …
Bloody flock of sheep … [/quote]
Lol, sheep or not u are wrong, as ive already said and as has John at JSR the only corrections the ecu can make on closed loop (WOT) is knock control. The MAF adjusts jack shit on closed Loop. [/quote]
That should read “open loop” instead of closed loop
Well I’m on a 260 map with a 2bular 8x22 exhaust and 2bular sports cat. My car dyno’d at 271.1bhp but I don’t know what my AFR’s are.
My MIL light has been on for a while and popped itself off after about 800 miles. When it was plugged in, I was told that my car was running too rich?!
Anyway, not sure if anyone will read this post with much interest. The last time I tried posting I was told about fucking Cheryl Cole and some other bint or something. Maybe this post will elicit a similar response…
The muff and decat will not effect your AFR’s at all so no worries…Anyone telling you your stock car is runing rich is an idiot and has no clue…
The thing is with headers is they will give you power because it is on the bleading edge of lean in the mid range and over time the ECU will make changes to bring things back to normal and those changes will remove the gains the header first gave you…
The first time I ran with headers, piggy back Xede ecu and ronin supercharger I was in the 11’s and 12’s AFR after a month of driving the ecu had removed all the AFR corections from the setup and I was in the danger zone of the mid13’s… Fortunitly I was running 100 oct. fuel so it saved my engine from detetionation…
and that was the begining of the quest to crack the ECU…
jfk I’m only tryin to help you and others from making a costly mistake mate…
19 pages of bickering and only a couple of hours after I SORN my car it is now suddenly declared that I will lose my gains in 6 weeks …
How very convenient of you to add that now Frank …
Absolute genius …
Politicians have much to learn from you !!!
Are you hoping everyone forgets this thread in 6 weeks ??
Dude I’ll buy you a freakin keg, no need for a truce since no lines were crossed…
Just drive it hard and run it for a while so the the ecu learns the changes made to the AFR and it will do its job…
Have a look back at my old threads and the battles over the other supercharger kits and their claims to cracking the ecu for a history lesson back in 07…
The first time I ran with headers, piggy back Xede ecu and ronin supercharger I was in the 11’s and 12’s AFR after a month of driving the ecu had removed all the AFR corections from the setup and I was in the danger zone of the mid13’s…
Frank do you know why the Ecu has removed all AFR corections?
I will try to dig out some of my old dynos to check the AFRs and post them up, I am still interested in seeing the power @ the hub of your cars I want to know whatcorrection he was using as a comparrison to mine as I only have power @ the hub.
As for the AFR argument on WOT the long term and short term trims are meaningless as there is no learn function, the car is using a map in open loop IE no readings from either MAF or Lamda, if you drive with these maps on the road they will be fine, long straights at Snetterton andsilverstone for instance will be a massive strain on the engine without the extra fuel you need to keep everything a bit cool inside.
Check out section 3 “full load” on the the first page hit i you google “AFR for supercharged engine” Linky
It is all up to you in the end, but if anyone can find a reference to a SC engie running at 13/1 AFR on full load please share it?
I am only trying to help
I realise you’re trying to help m8…
I just can’t get my head round why mine is +25 bhp and richer than Boothys when he has no 4-1 fitted … apart from that they are supposedly identical … both CN,d at the same time … both forged … both shell v power … both Trd …
Doing my head in ??
It just makes no sense at all …
Well if you have not got the original run data with and without the correction figures it is hard to tell what is going on (still might be impossible). But we do need to see what hub power you are getting to work out the correction, also did they use DIN or SAE correction for atmospherics?
