 Tuning for fuel milage? |
 Dec 13 2006, 09:49 AM
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DSM Tech Wizard  Group: Members Posts: 2,256 Joined: 10-January 01 From: central IL Member No.: 10  |
Hypothetically, would it be possible to tune a car to get better milage than what it came with from the factory? Lower the boost, take out some fuel?
-------------------- The fastest car I own is a minivan....
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Dec 22 2006, 11:28 AM
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DSMCentral Freak Group: Members Posts: 256 Joined: 30-October 02 From: Chicago Member No.: 33 |
QUOTE (ncgalant @ Dec 21 2006, 10:12 PM) QUOTE (NOMIEZVR4 @ Dec 21 2006, 02:17 PM) The reason why I want to raise the pressure is because my stock injectors at 10lbs of boost are seeing close to 90% duty cycle. Im sure when I raise the boost, install the exhaust and cams I will need extra fuel..  So, raising the fuel pressure will have no adverse effects on gas mileage? No it won't. Closed loop can make up for that. I would recommend hacking the MAF one small bit at a time to make sure you don't take out to much. Log her between changes to see what happends. It may be enough just to take out the lower comb and then play with the adjustment screw in the bottom. I know stock these cars run on the rich side, so hacking the MAS should lean out the a/f ratio. Though my question to you is this, what exactly should I be looking for on the logger? Knock will be the #1 priority as always, but there is no accurate way of seeing if the car is running better or not without a wideband.  What do you think? |
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Posts in this topic
AWD DSM 1 Tuning for fuel milage? Dec 13 2006, 09:49 AM
awd4kicks This will be a good thread for NC Galant to respon... Dec 13 2006, 10:45 AM ncgalant QUOTE (AWD DSM 1 @ Dec 13 2006, 09:49 AM)Hypo... Dec 13 2006, 01:27 PM Kazz5 I'm afraid I don't have any real tech know... Dec 13 2006, 01:31 PM Kazz5 One other tip to add to ncgalant's short list:... Dec 13 2006, 01:32 PM Chicago_DSM I get horrible gas mileage...I have a pretty heavy... Dec 13 2006, 04:25 PM Mitsu 77 AEM recomends 15.9 or richer. I have set my 02 Fe... Dec 15 2006, 07:36 AM Mitsu 77 QUOTE (Chicago_DSM @ Dec 13 2006, 05:25 PM)I ... Dec 15 2006, 07:39 AM Chicago_DSM I had Devo Tuning install my wideband, since I did... Dec 15 2006, 07:31 PM Mitsu 77 The AEM UEGO has a 0-1V analog wire to mimic a nar... Dec 15 2006, 08:02 PM Chicago_DSM Oh interesting...No mine is the gauge type UEGO...... Dec 18 2006, 12:55 PM Mitsu 77 I couldn't tell you, the grater part of my tun... Dec 19 2006, 10:57 AM ncgalant QUOTE (Chicago_DSM @ Dec 18 2006, 12:55 PM)Oh... Dec 19 2006, 12:18 PM AWD DSM 1 All in all, it sounds like there's not much yo... Dec 19 2006, 12:21 PM NOMIEZVR4 Since we are on the topic of gas mileage, I may as... Dec 20 2006, 10:42 PM black92_tsi_awd Why do you want to increase the base FP if you don... Dec 21 2006, 07:15 AM NOMIEZVR4 The reason why I want to raise the pressure is bec... Dec 21 2006, 02:17 PM ncgalant QUOTE (NOMIEZVR4 @ Dec 21 2006, 02:17 PM)The ... Dec 21 2006, 04:12 PM NOMIEZVR4 Thanks for the advice! Im so excited it wont h... Dec 21 2006, 11:38 PM black92_tsi_awd I've found that all the modifications and tuni... Dec 22 2006, 08:26 AM AWD DSM 1 Shamou got a little less than 20 on her first tank... Dec 22 2006, 10:01 AM ncgalant After hacking the MAF properly your fuel trims sho... Dec 22 2006, 11:57 AM Kazz5 BTW, unexplained crappy fuel mileage can often be ... Dec 26 2006, 08:26 AM
SCCA Stang QUOTE (black92_tsi_awd @ Dec 22 2006, 08:26 A... Dec 26 2006, 08:52 AM |
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