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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 01-11-2011, 06:53 AM   #1
Maxgraphix
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Guess I'm gettin the Shark Injector

After installing the Ram Air box on the 325 I noticed hesitation off the line. I've been told that since I'm now gettin more air I need more fuel and more advanced timing. So far I think the Shark Injector will be the best and easyist install (and cheapest). Anyone know of a deal better than the 299.00?
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Old 01-11-2011, 07:32 AM   #2
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An intake does not change the air flow significantly enough to need software adjustment. It doesn't change the amount of air your car sucks in, just the temperature. I'm more inclined to believe you messed something up during the install. Check your MAF connections and clean the MAF sensor. Also check if all the tubing has been tightened up properly.
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Old 01-11-2011, 07:37 AM   #3
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^+1

You don't need to modify anything to make an intake work better. It's just to keep the air cooler. Most intakes barely do anything (except look cool) anyway.
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Old 01-11-2011, 09:02 AM   #4
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The hesitation is probably the fact that your not getting enough fuel released from your cat.
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Old 01-11-2011, 09:08 AM   #5
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how old is your flux capacitor?
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Old 01-11-2011, 09:44 AM   #6
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how old is your flux capacitor?
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Old 01-11-2011, 10:56 AM   #7
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You have an air leak somewhere, find it.


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Old 01-11-2011, 11:48 AM   #8
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how old is your flux capacitor?
My Flux Capacitor is always new - when I think its wearing out I go back in time and get a new one!
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Old 01-11-2011, 11:50 AM   #9
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I've had the intake on for 2 years now and the hesitations always been there. I've checked for leaks or bad connections, but I'll check again. Thanks, Guys
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Old 01-11-2011, 12:00 PM   #10
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Get the shark anyhow, it was worth 14whp with the addition of an intake for me.
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Old 01-11-2011, 12:02 PM   #11
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^+1

You don't need to modify anything to make an intake work better. It's just to keep the air cooler. Most intakes barely do anything (except look cool) anyway.
Wrong. If an intake changes the piping size, more air flow results. On my Lexus I got a 3" intake (much larger than stock) and a piggyback chip that came with it. The chip adjusted the air fuel ratios. Not only was the air cooler, but there was more of it flowing in. This resulted in a 9rwhp gain (i dynoed the car to check the gains after putting the intake in). Anyways, gains and such always vary, but to say that all intakes do is change the air temp is wrong. Larger tubing/better bends/higher flow filters allow for more air to come into the engine. If chips and piggybacks change A/F ratios to be more lean (use less fuel, more air), they can change it all they want with this increased airflow. The ratios can be changed without increasing airflow as well (using stock airboxes) but overall, larger piping/higher flow filters will absolutely allow more air into your engine's intake system. They are not just "for show". You may be saying they're "for show" because they provide little gains, if any sometimes, but to say they do absolutely nothing is plain wrong.


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Old 01-11-2011, 12:13 PM   #12
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The stock dme compensates 7% for 2003.5 and up MS45 and 15% for MS43 pre 2003.5s

so infact the computer does add for the increased airflow without throwing a light.

Conforti's shark will help with the added airflow all thrown into calculation, and the added pedal responsiveness and 7k redline and removed top speedo isnt that bad for the price.

Its one of those things you do to top off the mods on the car. Its also a must if you have a higher ratio differential and need more road speed in each gear.
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Old 01-11-2011, 12:14 PM   #13
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Old 01-11-2011, 12:21 PM   #14
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An intake does not change the air flow significantly enough to need software adjustment. It doesn't change the amount of air your car sucks in, just the temperature. I'm more inclined to believe you messed something up during the install. Check your MAF connections and clean the MAF sensor. Also check if all the tubing has been tightened up properly.
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Old 01-11-2011, 12:21 PM   #15
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Wrong. If an intake changes the piping size, more air flow results. On my Lexus I got a 3" intake (much larger than stock) and a piggyback chip that came with it. The chip adjusted the air fuel ratios. Not only was the air cooler, but there was more of it flowing in. This resulted in a 9rwhp gain (i dynoed the car to check the gains after putting the intake in). Anyways, gains and such always vary, but to say that all intakes do is change the air temp is wrong. Larger tubing/better bends/higher flow filters allow for more air to come into the engine. If chips and piggybacks change A/F ratios to be more lean (use less fuel, more air), they can change it all they want with this increased airflow. The ratios can be changed without increasing airflow as well (using stock airboxes) but overall, larger piping/higher flow filters will absolutely allow more air into your engine's intake system. They are not just "for show". You may be saying they're "for show" because they provide little gains, if any sometimes, but to say they do absolutely nothing is plain wrong.


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None of the aftermarket intakes for our cars change the intake tubing size.
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Old 01-11-2011, 12:31 PM   #16
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This Is why youre loved and hated.
Doesn't matter what he or you think, he is wrong. The ecu can only adapt so much, not to mention it isn't going to add ignition timing, or adjust the vanos outside the factory specified range. Give it up, both of you.
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Old 01-11-2011, 12:37 PM   #17
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Are you serious? A CAI is not going to affect the car enough to need software adjustment. It absolutely does not.
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Old 01-11-2011, 12:41 PM   #18
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Are you serious? A CAI is not going to affect the car enough to need software adjustment. It absolutely does not.
Notice I wasn't asking you anything. I told you, and I have dyno plots to prove my point. What do you have, hearsay?
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Old 01-11-2011, 12:49 PM   #19
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any one remember that old school simota intake

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Old 01-11-2011, 12:53 PM   #20
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how old is your flux capacitor?
I never got this joke for the longest time...then I asked someone and they said it's a reference to a movie in the early 80's...then I'm like no wonder...that was back when Dinosaurs were around
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