Has anyone driven both the Si and the CTR?

warrendeath said:

...My only issue as a highway cruiser is it sits TOO high in the RPM band. That definitely kills gas. My Mustang was BARELY 2000rpm, maybe a little bit lower...the Type R hovers around 3000rpm at similar speeds. Reducing it to a similar RPM range returns FAR better gas mileage (but I'm going about 65 to do it).

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Bizarre that with the ongoing search for better fleet mileage numbers Honda did not give 6th gear a longer ratio just for highway cruising. It's not as if a shorter ratio for 6th is needed either on track or on the strip, 6th would never be called upon in either context (OK, maybe on the front straight at Fuji, or on the Dottinger Hohe).

Would’ve been cool if Honda offered different gearing options for 6th. That is wishful thinking for sure but I could see a “race” option where perhaps the 6th gear is a close ratio gear and a “Touring” option that has a taller 6th gear.

Higher RPM on highway cruise = more wear over time.

I remember in Honda swaps that some would drop in the 5th gear from an Integra LS into their Type R trannies to drop the RPMs on the highway.

man you guys are crazy. There'd be no way for me to average that mpg around here with my commutes.

Regarding the RPM, it's lower than the S2000 or the 9th gen I drove, so it didn't feel that high.

Yeah the conditions in how you drive the car definitely plays a huge role in overall MPG attained. Since my R isn’t my DD I drive when traffic is flowing all the time hence why I am getting pretty close to what Honda advertised it’s mileage to be.

Yeah S2000 has high RPM in the highway. I swear it was like 3600 RPM in 6th going 70 MPH.

Oh well, the higher than ideal highway cruising RPMs isn’t something I would care too much about. I will drive my minivan if I want low cruising RPMs

boosted180sx said:

man you guys are crazy. There'd be no way for me to average that mpg around here with my commutes.

Regarding the RPM, it's lower than the S2000 or the 9th gen I drove, so it didn't feel that high.

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Google "North Dakota elevation map", look around Fargo..

You'll understand

stevescivic said:

Yeah the conditions in how you drive the car definitely plays a huge role in overall MPG attained. Since my R isn’t my DD I drive when traffic is flowing all the time hence why I am getting pretty close to what Honda advertised it’s mileage to be.

Yeah S2000 has high RPM in the highway. I swear it was like 3600 RPM in 6th going 70 MPH.

Oh well, the higher than ideal highway cruising RPMs isn’t something I would care too much about. I will drive my minivan if I want low cruising RPMs

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yeah. really hurts mpg in stop and go. Probably doesn't help that i'm boosting everywhere for no real reason lol.

and your right, my ILX is like 2000 rpm going 80 mph lol. So far the best tank I have gotten is 22.5 lol. I didn't really buy it for MPG anyways so it doesn't really bother me but it would be nice if i didn't have to visit the gas station so often lol.

DevonK said:

Bizarre that with the ongoing search for better fleet mileage numbers Honda did not give 6th gear a longer ratio just for highway cruising. It's not as if a shorter ratio for 6th is needed either on track or on the strip, 6th would never be called upon in either context (OK, maybe on the front straight at Fuji, or on the Dottinger Hohe).

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Not sure what the decision was there. Obviously performance oriented. I’ve tried different things to get the ratio down in 6th, still hangs too high. Odd choice. I think in a refit this might be a good thing to look at. Honda could EASILY push another 3-5mpg highway if they did that.

warrendeath said:

Not sure what the decision was there. Obviously performance oriented. I’ve tried different things to get the ratio down in 6th, still hangs too high. Odd choice. I think in a refit this might be a good thing to look at. Honda could EASILY push another 3-5mpg highway if they did that.

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What number is your type R? Post some pictures!

boosted180sx said:

yeah. really hurts mpg in stop and go. Probably doesn't help that i'm boosting everywhere for no real reason lol.

and your right, my ILX is like 2000 rpm going 80 mph lol. So far the best tank I have gotten is 22.5 lol. I didn't really buy it for MPG anyways so it doesn't really bother me but it would be nice if i didn't have to visit the gas station so often lol.

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Getting 23 or so on my first tank. I keep my R guessing.

I work on a dealership and I have driven both 2017MY. Both are great cars . Although In my own opinion if I would have to buy an SI for myself, I would just buy a regular 4dr EX-turbo 6MT (takes regular 87 octane gasoline). They feel and perform very close. Of course you loose the sport/comfort setting and the limited slip differential and some power/torque. On transmissions, SI have a soft shifting feel just like a regular 4dr EX-turbo 6mt or 5dr Sport 6MT. CTR have an S2000 shift feel (a little notchy but not hateful). Suspension, Steering feedback, Braking, Acceleration, Cornering stability etc etc etc... Of course the CTR will win in all those category. Both are great cars, you will not regret with whatever you choose to buy/own. The only complaint I have with my CTR is the factory audio system sub-woofer is weak. Got that issue resolved, finally got the dual 12" Alpine Subs hooked up. Pictures will be posted soon in the CTR audio tread. Other than that, no other issues with my CTR.

warrendeath said:

I would say I'm a mix of spirited driving, with long winded highway driving. My only issue as a highway cruiser is it sits TOO high in the RPM band. That definitely kills gas. My Mustang was BARELY 2000rpm, maybe a little bit lower...the Type R hovers around 3000rpm at similar speeds. Reducing it to a similar RPM range returns FAR better gas mileage (but I'm going about 65 to do it).

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3000 RPM give you 300ft.lbs torque, available anytime you want on the highway.

The 2.0L turbo engine doesn't have much torque at low RPM. The new 2.0L Accord can probably cruise around 2000 RPM but the 10-speed auto transmission will downshift anytime more power is needed. What was the engine in the Mustang? Must have been big enough to have torque at 2000RPM in 6th to not feel boring.

A lot of the improvement to fuel economy by slowing down to 65mph is from less air resistance at the slower speed. The effect of engine RPM is not as significant in the 2.0L turbo engine compared to a NA V6 or V8.

Hey guys, don't mean to thread hijack but, is the CTR engine the same 2.0 liter engine found in the base Civic but with a turbo? I ask because I'm considering an engine swap sometime in the future. Thanks.

callmehandsum said:

Hey guys, don't mean to thread hijack but, is the CTR engine the same 2.0 liter engine found in the base Civic but with a turbo? I ask because I'm considering an engine swap sometime in the future. Thanks.

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No, the base civic is an L15 1.5 liter and the CTR is a K20C, I'm sure there will be swap parts available once the 2.0T Accords start hitting the junk yard.

In the future, just create a new thread for your questions

I get 17-ish mpg, which is comprised of city driving and practically all shifts ending with a pshhhht or at/near redline. don't even care though...

typemismatch said:

No, the base civic is an L15 1.5 liter and the CTR is a K20C,

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The 2.0L naturally-aspirated engine in the Civic LX, LX-P, and EX coupe and sedan is a K20C as well.