Hey guys, what're your thoughts on trying this mod on the tC for more mpg? I've tried posting on that thread but haven't heard from anyone there yet?

https://www.scionlife.com/forums/vie...146&highlight=

 

I've heard of that, but I have a CAI so I can't give personal experience. Although with my K&N typhoon, I have seen an increase in MPG, but that might be from the change in my driving habits since instal.

 

^^Could be from the heat soak. Have an Injen CAI and entertain myself at red lights by watching my air intake temp skyrocket. Other day it was 87 outside and 104 IA temp by the time light turned green. I'm getting 28mpg overall but probably 70mpg after a long red light lol.

 

Change your oil to a full synth and if you're driving an 06 or 07 use the lightest weight oil you can (5w-20 if it's an 06 or 0w-20 if you have an 07). Change your tranny fluid to a synth blend. Make sure your air filter is completely clean and your o2 sensors are operating perfectly. Keep your tires inflated to the PROPER pressure. Some people would argue but I believe the quality of the gas you use has quite a bit to do with it as well. I can use a citgo gas and get about 28.5mpg, but if i use texaco or shell I get about 30.4mpg. It's a higher quality gas and burns much more efficiently, and it's recommended by Toyota.

And most of all.... Stay off the redline.

 

^^^And don't launch from a red light.

 

One other thing you have to realize is that it takes a lot of gas to make the engine spin above 1500 rpm and way more above 3000rpm so if you can coast at higher speeds and let the engine idle then you can really kick up the average MPG. This is the ONLY way to get really high mileage even if you can coast at 30 mph for a little ways down a gradual hill it will add up in the long run. The more you can coast at higher speeds the more you MPG will increase since the engine burns a little even at idle.

 

I'm not sure about proper tire pressures. I'd recommend proper tire pressures from the average joe... but for me and people who are closer I usually recommend at least 3-4 PSI over OEM recommendation.

I personally run 37/35 myself. I need to get more air (I think its nearly at stock specs now)... I'll be doing 39/37 next.

Assuming you have the OEM tires (or actually most regular tires), as long as you stay under 44 you're ok. I would recommend that you always keep PSI between 35 and 44. Anything below 35 is sorta low IMHO.

Reducing rolling resistance, and improving handling are just two benefits of raising your PSIs (up to a certain extent, of course).

Don't overdo it - but overall, an overinflated tire is less dangerous than an underinflated one. Remember, Toyota recommends pressures based on what will *just* work while providing some ride quality. It's not optimized for performance or MPG. It's a compromise biased towards ride quality.

 

^^Mfr tire pressure specs are also based on preventing uneven tire wear. Couple psi overinflation probably won't matter much, but since specs are 32/29 I think you're headed toward wearing out your tread centers.

 

If I did only strraight roads that may be a concern but with all the cornering I do they tend to wear very even with 40psi in the xB. The tC would be a little different because thay are wider and may tend to wear in the center more. Besides you don't need the center of the tire for much anyway, you need tread on the sides for cornering traction.

 

Yes, it is a possibility... I'm monitoring my tires to see if I'm doing any bad damage.