The truth about bolt on power upgrades ?
04-06-2017, 02:09 PM
#21
Senior Member
Originally Posted by catinthehat
Of course your mpg will increase with certain intakes. They are leaning out the engine. You trade mpg increase and slightly better power with greater chance of blowing up your engine. There is more to it than that, but that statement is absolutely true.
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Growinupmx (04-06-2017)
04-06-2017, 02:10 PM
#22
Senior Member
5.0 here, and I installed things separately to get a gauge on what was going to happen with each one....and my brother wanted to know if anything helped so he could do it on his. Can't monitor power, never dyno'd it, but below are MPG changes.
1 - S&B CAI - No difference
2 - Flowmaster Super 44 muffler with dual out & Resonator Delete - No difference
3 - Front air-dam removal - No difference
4 - 2" leveling kit & tire install - Lost 15-20% fuel economy
Nothing seems to add except (from my experience anyway) tuners and that was soley on diesel applications. I don't believe anything that it says on the box.
1 - S&B CAI - No difference
2 - Flowmaster Super 44 muffler with dual out & Resonator Delete - No difference
3 - Front air-dam removal - No difference
4 - 2" leveling kit & tire install - Lost 15-20% fuel economy
Nothing seems to add except (from my experience anyway) tuners and that was soley on diesel applications. I don't believe anything that it says on the box.
04-06-2017, 02:27 PM
#23
Senior Member
5.0 here, and I installed things separately to get a gauge on what was going to happen with each one....and my brother wanted to know if anything helped so he could do it on his. Can't monitor power, never dyno'd it, but below are MPG changes.
1 - S&B CAI - No difference
2 - Flowmaster Super 44 muffler with dual out & Resonator Delete - No difference
3 - Front air-dam removal - No difference
4 - 2" leveling kit & tire install - Lost 15-20% fuel economy
Nothing seems to add except (from my experience anyway) tuners and that was soley on diesel applications. I don't believe anything that it says on the box.
1 - S&B CAI - No difference
2 - Flowmaster Super 44 muffler with dual out & Resonator Delete - No difference
3 - Front air-dam removal - No difference
4 - 2" leveling kit & tire install - Lost 15-20% fuel economy
Nothing seems to add except (from my experience anyway) tuners and that was soley on diesel applications. I don't believe anything that it says on the box.
04-06-2017, 02:37 PM
#24
You are assuming the MAF is recalibrated for the intake, which I doubt most here will do. The ECM is only as good as its inputs.
04-06-2017, 02:44 PM
#25
Yes, but the MAF doesn't need to be recalibrated in most cases and is also non-existent on the ecoboost engines. They are speed density tunes. Also, regardless of how inaccurate the MAF calibration is, the truck will still used closed loop feedback from the oxygen sensors to correct fueling. Even if the MAF is way off, the PCM will adjust fueling to keep AFR at target during CL operation.
04-06-2017, 02:50 PM
#26
Yes, but the MAF doesn't need to be recalibrated in most cases and is also non-existent on the ecoboost engines. They are speed density tunes. Also, regardless of how inaccurate the MAF calibration is, the truck will still used closed loop feedback from the oxygen sensors to correct fueling. Even if the MAF is way off, the PCM will adjust fueling to keep AFR at target during CL operation.
04-06-2017, 02:54 PM
#27
04-06-2017, 02:58 PM
#28
Gone Golfin
iTrader: (3)
i have an afe dry intake and have had a borla exhaust since he was at about 2500 miles. sounds good, feels peppier, but not concerned enough to get him dynoed. i did notice a nice mpg boost since i put in the intake. was at 7.4 in my normal take the kid to school day. went up to 11.6 with the intake. and crazily went up to 13.2 when i got it leveled. freeway avg was 22.2. after level and intake.
This is the problem. You post this response and there are people who are going to believe it.
The problem is it simply did not happen. There is no way today, tomorrow, or any other day an intake, exhaust and level netted you almost 100% increase in gas mileage. 7.4 to 13.2? Aaaaa... No.
Regarding a dyno, IF you run your truck (any vehicle) on a dyno and then immediately install the CAI and test again you would be able to get a good idea whether or not you had a HP change. Keeping the existing test parameters is key.
04-06-2017, 03:15 PM
#29
Correct. Excellent fuel control is required to keep the catalytic converter operating at peak efficiency and thus reduce emissions to passable levels.
Also correct and I feel the same way about all the false info that gets posted. I probably get too wrapped up in arguing with people over stuff like this but it's frustrating to me to see it get posted and then trickle down to others.
This is the problem. You post this response and there are people who are going to believe it.
The problem is it simply did not happen. There is no way today, tomorrow, or any other day an intake, exhaust and level netted you almost 100% increase in gas mileage. 7.4 to 13.2? Aaaaa... No.
Regarding a dyno, IF you run your truck (any vehicle) on a dyno and then immediately install the CAI and test again you would be able to get a good idea whether or not you had a HP change. Keeping the existing test parameters is key.
The problem is it simply did not happen. There is no way today, tomorrow, or any other day an intake, exhaust and level netted you almost 100% increase in gas mileage. 7.4 to 13.2? Aaaaa... No.
Regarding a dyno, IF you run your truck (any vehicle) on a dyno and then immediately install the CAI and test again you would be able to get a good idea whether or not you had a HP change. Keeping the existing test parameters is key.
