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Title: MAF flow rate AUQ 1.8t Post by: mushtafa on November 04, 2015, 03:06:23 PM Quick question guys, what flow should I expect at different state of tune?
Vague I know, but had the car on the rollers at the weekend, it made 222hp and the MAF maxed out at 170g/s. Does this sound right? I was expecting more flow. AUQ, standard ko3s, 3" decat, 2.5" exhaust system, Honda S2000 air filter, FMIC, running around 22psi boost. My next upgrade will be a supersized turbo intake pipe - I've read it can improve things a fair amount. I've attached the graphs, the AFR line doesn't look great to me either to be honest. Any thoughts? Title: Re: MAF flow rate AUQ 1.8t Post by: maZer.GTi on November 04, 2015, 08:15:28 PM Go to MLHFM Map, take the last value and decrease by 200.
In your case 1005kg/h - 200kg/h = 805kg/h. This is the max reachable value of your maf sensor. 805kg/h / 3600 * 1000 = 223,611g/s Title: Re: MAF flow rate AUQ 1.8t Post by: vwaudiguy on November 05, 2015, 12:12:35 AM Couple things about your dyno run. Have them zoom in before they print the graph, so you get higher resolution. Also, don't use "shootout" mode, rather match the acceleration on the dyno to what you see on the street in the same gear. Placement of the temp sensor makes the numbers with this dyno vary greatly. I can almost guarantee they have their "x" number too high as well based on your mods/power numbers/maf readings.
Title: Re: MAF flow rate AUQ 1.8t Post by: mushtafa on November 05, 2015, 11:53:04 AM Go to MLHFM Map, take the last value and decrease by 200. In your case 1005kg/h - 200kg/h = 805kg/h. This is the max reachable value of your maf sensor. 805kg/h / 3600 * 1000 = 223,611g/s Excellent help, thanks a lot! Title: Re: MAF flow rate AUQ 1.8t Post by: mushtafa on November 05, 2015, 11:56:49 AM Couple things about your dyno run. Have them zoom in before they print the graph, so you get higher resolution. Also, don't use "shootout" mode, rather match the acceleration on the dyno to what you see on the street in the same gear. Placement of the temp sensor makes the numbers with this dyno vary greatly. I can almost guarantee they have their "x" number too high as well based on your mods/power numbers/maf readings. Hi, we had a group discount, was cheap, I went for it :) You can you guess the power output based on MAF readings alone? Title: Re: MAF flow rate AUQ 1.8t Post by: vwaudiguy on November 06, 2015, 09:28:19 AM Hi, we had a group discount, was cheap, I went for it :) You can you guess the power output based on MAF readings alone? I was under the impression if the maf was not re-scaled, you could get very close by looking at the maf readings. Even more so for a standard-ish hardware combination such as yours. I could be wrong. |