2-3mpg with K&N air filter and aftermarket muffler?

[Ecky]

Originally Posted by Joggernot

At one time I said to paraphrase, "I'll never get a good tank...I'm married." Well, I might be wrong. We finally got a 2018 Honda CRV that has Instant, Trip, and Tank mpg readouts. On a trip last week of 3 1/2 hours north and return, she drove north and got 38 mpg. I drove back south and got 36 mpg. Yes, these are readouts from the car and calculated at the pump is usually 2 mpg less. But she is competitive and beat me on this drive...of course I like to think it's because of the southwest wind along the route.

My SO's Ultragauge is tuned just optimistically enough in our Fit that it shows numbers comparable to my K-Sight. Given her competitive nature, I find this actually has real world returns at the pump.

[jazclrint]

Originally Posted by redpoint5

Doesn't sound like good advice to me. An 18% improvement in fuel economy from an air filter and exhaust? The biggest restriction to airflow in an engine is the throttle, which is used every time it's not wide open. In other words, an air filter isn't going to magic more fuel economy. An exhaust could potentially, but that also needs to be tuned correctly, so some monkey in a shop isn't likely to get that right.

That short trip distance isn't helping economy because it's not enough time to warm up. Get an EV and it will efficiently cover those short distances.

We have an EV and I drive it on my 50 mile commute. We have the truck for towing as I said.

[jazclrint]

Originally Posted by hayden55

Yup. Just because he's an owner doesn't mean he knows anything about the vehicle. I see a lot on forums or facebook groups where guys are preaching about plug wires and ground straps too. Doesn't mean they work though. lol
Your best bet will be to pump the tires up to 45+ and teach your wife how to drive without brakes (DWB). A lot of the time in the Prius i try to use neutral (you could just coast as well) instead of regening because its still only around 60% efficient.
Also as stated above you could look into the temperature of the car on her commute and look into grill blocks and redirecting the intake for warm air. Its about time for me to do this on the Prius again this year as well.

Thank you for that. We live in SW Florida, so I'm curious how much that will help us. The tires max out at 50psi, and going through the owners manual I have upped them to 38. She did drive it with the rear wheels set at 45 after I towed our camper with it and it didn't seem to do much. But I wasn't rigorous with recording data so I'll experiment. The regen is super light. It's the blended braking where the regen comes in on this truck. But she does work hard on accelerating and braking gently. There is a Guage for just that on the dash.

I will defend grounding straps. A few years back I had a '98 Caravan that would randomly die and not start. I replaced the grounding strap and leaned all the grounds I could find and got it running again. But they were all in terrible shape. 😏 But yeah, getting more .pg seems a bit unlikely unless the corrosion is really bad..

Thank you again.

[jazclrint]

Originally Posted by Hersbird

Her drive should be ideal for a hybrid. So I would say you need to adjust the nut behind the wheel. She needs to quit enjoying the rumble of that big v8 and the way she can out accelerate everyone around her. Anything that increases power wont help economy much if any, but will even further excite the nut behind the wheel and encourage even more spirited driving.

Please know, I'm not really calling your wife a nut, it's just an old saying that makes a great point.

Haha, I wish that was the case. Really what happens is she sit in the truck with the A/C and it chews through the battery. IF the road had no stop lights then yes in 4 mode the truck can get up to 30mpg. But there are something like 8 or more stop lights between here and there. That is a lot of wasted energy getting that big truck up to speed so many times.

[jazclrint]

Originally Posted by Autobahnschleicher

I mean, a 1KR swap would fix the issue of high fuel consumption and with the hybrid drivetrain accelleration wouldn't even be bad.
It would just be down on power a little...

What is a 1KR?

[jazclrint]

Originally Posted by Autobahnschleicher

I mean, a 1KR swap would fix the issue of high fuel consumption and with the hybrid drivetrain accelleration wouldn't even be bad.
It would just be down on power a little...

Hahaha. I just looked this up. Yeah, no. That 6.0L V8 has a job that help bring some side hustle money, and special summers for my kids. It's not going anywhere. That does give me an idea that once this motor dies Maybe dropping in a modern 6.2L Vortec would be a good idea. But that is way into the future.

[Tahoe_Hybrid]

Originally Posted by redpoint5

Doesn't sound like good advice to me. An 18% improvement in fuel economy from an air filter and exhaust? The biggest restriction to airflow in an engine is the throttle, which is used every time it's not wide open. In other words, an air filter isn't going to magic more fuel economy. An exhaust could potentially, but that also needs to be tuned correctly, so some monkey in a shop isn't likely to get that right.

That short trip distance isn't helping economy because it's not enough time to warm up. Get an EV and it will efficiently cover those short distances.

i got one of these hybrids the best i can do is 32mpg out of it on the highway aggressive hypermiling...and route specific


the only reason why my MPG went down was because the pump was overcharging me on fuel (the meter was running fast 2.2x vs ACTUAL amount pumped .) other wise i can get 23-26 around town..

I did a couple of tests confirming it was the issue


i switched to another pump mpg is back to normal 23-26 around town..with the same slope(the pump behind it) the same MPG my dad is getting in his corolla around town

[Tahoe_Hybrid]

Originally Posted by jazclrint

Hello all. I have a 2012 Cadilac Escalade Hybrid. For its age and mileage, it's running pretty well and getting decent fuel mileage. But I'd like more, of course. I have aftermarket wheels, not by choice, but they are stronger as we tow with this truck. My wife's commute is 7 miles one way and the stupid road she drives is mostly 45mph with maybe a dozen stoplights from here to there. I can take the truck on a loop through town then onto the interstate and back through town and average 21-22mpg. She's getting about 17mpg on this commute. One GM SUV hybrid owner has suggested that if I put a K&N filter and an Aftermarket muffler on it I could get 2-3mpg better. My mechanic brother says no, you'd need a cold air intake kit and full exhaust.

What do you guys think?

Thank you for your time.

also does it jerk when it switches from EV to gas?