by "Wheelerguy" (wheelerguy)
Published 11/13/2017 at 07:23
by "Wheelerguy" (wheelerguy)
Published 11/13/2017 at 07:23
Tags: Regular Car Reviews
; RCR
; Lexus IS350
STARS: 3
!!! UNKNOWN CONTENT TYPE !!!
I thought it was impossible.
"Rustholes-Are-Weight-Reduction" (rustholes-are-weight-reduction)
11/13/2017 at 08:38, STARS: 0
I’d still get that over an S4 or equivalent BMW or Mercedes
"KusabiSensei - Captain of the Toronto Maple Leafs" (kusabisensei)
11/13/2017 at 08:45, STARS: 5
I just made this same point to E90M3 for wanting an Audi RS4. Get the IS F instead, before your wallet stages a coup at the Audi dealer service counter.
"Dr. Zoidberg - RIP Oppo" (thetomselleck)
11/13/2017 at 10:22, STARS: 0
Dammit Rej!
"awmaster10" (awmaster10)
11/13/2017 at 10:41, STARS: 0
Is350 sure but the is250 is a dog
Edit: it says is350. Guess I can’t read today. The is350 is actually not a bad car at all, and compared to an s4 it would be a dream to own and maintain
"awmaster10" (awmaster10)
11/13/2017 at 10:45, STARS: 0
I edited what I said because it says is350 and I can’t read but I got kinjad. The is350 is a sweet used bargain, especially because you can dip into the high mileage dirt cheap ones without worrying about maintanance
"Rustholes-Are-Weight-Reduction" (rustholes-are-weight-reduction)
11/13/2017 at 10:53, STARS: 1
We didn’t get the 350 in Europe anyway, so it would be 220d, 250 or IS-F.
I’d imagine the 250 as adequate (never actually drove any), except if you wanna drive a sports car. I like fast cars, but the hp-craze of the last years is not my thing
"Rustholes-Are-Weight-Reduction" (rustholes-are-weight-reduction)
11/13/2017 at 10:55, STARS: 1
No problem, it updated, but Kinja is a bit slow to show it :)
"awmaster10" (awmaster10)
11/13/2017 at 11:01, STARS: 0
The is250 is not too bad on power and I love the idea of a really small v6 instead of a 4cyl. Problem is the is350 gets better suspension and other stuff and is just a really good overall package. Can’t complain about the extra hp since the 2gr will still be bulletproof and they’re evening out in price in the used market.
I would LOVE to have an is-f as a daily though. Reliable v8 sedan is kinda the ideal formula for me.
"Discerning" (discerning2003c5z)
11/13/2017 at 11:10, STARS: 0
RCR fact checker (nitpicking):
1) “it was initially crafted in opposition to the Lexus ES 350
This is wrong on many levels. It was originally made as an evolution of the XE10 (obivously) and was meant to compete with the BMW 3 series (again, obviously). Plus, the ES is a good 10 inches longer than the IS. The IS is not the hardcore counterpart to the ES or vice versa.
2) “RWD only sports sedan.” Wut? The IS350 was available with AWD from 2010 to 2013. Sure, it was originally RWD only, but it seems weird to call it RWD only when it was available in AWD for nearly half of its lifespan.
3) If it had a manual transmission available it would be a destroyer. Would it? What does that mean? The 335i came out two years later and the G37 makes more power and both of those cars can be had in a stick. Also, virtually no one has cracked the Toyota ECU, so there’s virtually ZERO aftermarket. What would it destroy?
4) Direct and Port injection. Direct injection is actually more than capable of correcting for knock, particularly compared to PI. The cool gas being injected directly into the combustion chamber helps to prevent premature ignition and even improves efficiency. He completely missed Toyota’s ultimate goal here. To limit carbon build up... Why else would you need both? In what way would having both help in cruising situations for a “lean burn?” No. Just no. The Toyota engine fires both injection forms during low load. This flushes carbon off the intake valves. Above medium load, the DI works ALONE.
5) @5:33 “I don’t know...” No, you really don’t. Do some research? It’s not a means to aid in knock detection or correction. DI can do that on its own. It would take 5 mins of research to find the reason behind it and the operation of Toyota’s D-4S, specifically.
OK, I’m done
"Rustholes-Are-Weight-Reduction" (rustholes-are-weight-reduction)
11/13/2017 at 11:34, STARS: 1
Hard to find an IS-F here, maybe easier in the US.
When I was in NYC a few weeks ago, I was shocked how many Lexii and Infinitis there were.
One thing that I like about the Q50 is that it’s pretty exotic here. I saw it at every corner there.
"briannutter1" (briannutter1)
11/14/2017 at 04:47, STARS: 0
Like my 2004 Tl. Rarely maintained and allowed to rust away -though being a handsome design. Some of us recognize them earlier on and keep them alive.
"bhtooefr" (bhtooefr)
11/14/2017 at 07:35, STARS: 1
I believe the reduction of carbon buildup, while absolutely an advantage to DI+PI systems, wasn’t the intent behind the D-4S system (AFAIK, when Toyota came out with it, that issue wasn’t all that well known yet). It’s certainly an advantage that Toyota markets today, though.
Probably worth taking a look at this , although I’ll summarize.
So, basically, the advantages that Toyota was going for... first off, port injection provides much better mixture homogeneity than direct injection. This reduces basically all emissions, as it ensures much more complete burning of fuel and oxygen. So, while the engine does go to DI only at high load, it can use high percentages of PI at moderate to low load.
In addition, while DI systems can do this as well, DI+PI is better at stratified mixture strategies. You wouldn’t do this when you’re fighting knock, which would be at high load usually - you’d go rich and full DI instead, as you pointed out - but apparently Toyota does run a lean PI/rich DI aimed at the spark plug strategy for accelerating warm-up on a cold start. Emissions will be lower than simply doing an early lean DI shot, and a later rich DI shot, due to better mixture control. I’ve certainly heard of engines from other manufacturers using stratified mixture to enable lean burn modes in more operating regimes than warm-up, but usually the NOx emissions impact is too high - IIRC Mercedes has some lean stratified mixture gasoline engines that use Selective Catalytic Reduction (read: diesel exhaust fluid) to deal with NOx, and Mazda’s using an HCCI variant to get combustion temperatures down on their upcoming lean stratified mixture gasoline engine to deal with NOx. (Both of those are actually DI only, IIRC.)
Finally, although the linked article doesn’t mention it, NVH is almost certainly reduced with PI. Reduced or even eliminated DI injector activity at low to moderate loads will reduce the diesel-like clatter of the engine, especially at idle.
"Discerning" (discerning2003c5z)
11/14/2017 at 08:11, STARS: 1
Ford actually has some DI/PI engines that use only PI at idle and low load to avoid NVH and the diesel effect. I didn’t mention it for the Toyota becaise the Toyota is always running DI though, from idle to high load. I wasn’t aware of the emissions effects to that extent. Interesting.