is350 Fsport - will acceleration improve after break-in?
10-10-14, 04:17 AM
#1
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is350 Fsport - will acceleration improve after break-in?
'14 Fsport
592 miles on ODO
93 octane
Hi guys, so last night I was playing around with certain settings and decided to try WOT. I had the car in SPORT + and rolled into the throttle in 2nd gear. It felt good as I rolled into the throttle (a nice hydraulic push), however, when I actually went WOT, the car felt "flat" as though the ignition timing was being pulled back a couple degrees versus when at 70-90% throttle. What gives? Is this how the IS350 is like, or is there something I will need to get addressed with the dealer at the next service? Or will acceleration improve after 1000 or so miles? I also know that many modern ECU's have adaptation periods and many times require 2-3 WOT through multiple gears to set optimal ignition timing & A/R ratio's, however I still did not expect the flatness at WOT.
Essentially:
at 70-90% throttle, the car felt responsive to the touch, light on its feet
at 100% throttle, the car felt "flat" even though it was accelerating, it did not feel quick at all.
My passenger even asked if I was going WOT (he has a F30 328, similar in speed/acceleration). It did not feel like a car that accelerates 0-60 in 5.4 seconds or traps 102mph in the 1/4mile (source: car and driver). Please comment to put my mind at east
592 miles on ODO
93 octane
Hi guys, so last night I was playing around with certain settings and decided to try WOT. I had the car in SPORT + and rolled into the throttle in 2nd gear. It felt good as I rolled into the throttle (a nice hydraulic push), however, when I actually went WOT, the car felt "flat" as though the ignition timing was being pulled back a couple degrees versus when at 70-90% throttle. What gives? Is this how the IS350 is like, or is there something I will need to get addressed with the dealer at the next service? Or will acceleration improve after 1000 or so miles? I also know that many modern ECU's have adaptation periods and many times require 2-3 WOT through multiple gears to set optimal ignition timing & A/R ratio's, however I still did not expect the flatness at WOT.
Essentially:
at 70-90% throttle, the car felt responsive to the touch, light on its feet
at 100% throttle, the car felt "flat" even though it was accelerating, it did not feel quick at all.
My passenger even asked if I was going WOT (he has a F30 328, similar in speed/acceleration). It did not feel like a car that accelerates 0-60 in 5.4 seconds or traps 102mph in the 1/4mile (source: car and driver). Please comment to put my mind at east
10-10-14, 09:07 AM
#5
Yea I would maybe give it a bit of time to break in, but then again and not that I suggest it but my buddy races and always told me ignore the break in period lol...havent listened to him yet but all his cars he has never had any issues with "breaking in the car"
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10-10-14, 03:19 PM
#8
Mine feels a little flat as well, but I have even fewer miles than you do. I'm also coming from a 335i with an N54, so I was prepared for the engine to feel a bit down on power. Still plenty of power for a fun drive though. I'm not even sure what octane I have because the dealer filled it up before I took delivery and I'm still on my first tank.
10-12-14, 07:57 PM
#10
Tech Info Resource
iTrader: (2)
Why? The engine was broken in at the factory. There is little time will change, unless they did a bad job, then it will burn oil excessively like my '92 GTS Celica did.
Your engine has been broken in for a very long time. Your mileage increases could just as easily be reformulated fuel based on season, lower alcohol content, using the A/C less as the temperatures drop, etc. etc. Unless you've kept a complete record (date, octane, brand, mileage, quantity) of every drop of fuel you put in the car, you really have no basis for even an elementary analysis.
10-12-14, 10:12 PM
#11
Lexus Champion
10-12-14, 11:41 PM
#12
Keep believing that. It's a lie.
Why? The engine was broken in at the factory. There is little time will change, unless they did a bad job, then it will burn oil excessively like my '92 GTS Celica did.
We have a winner. Engine break-in takes about 30 minutes start to finish from a dry fire. At the end of the 30 minutes, you'll be at WOT and you'll be ready for anything. Since the factory takes the initial fire away from you, it isn't possible to hurt anything. They've already run it hard to seat the rings and mate the valves with their seats - at the factory.
Your engine has been broken in for a very long time. Your mileage increases could just as easily be reformulated fuel based on season, lower alcohol content, using the A/C less as the temperatures drop, etc. etc. Unless you've kept a complete record (date, octane, brand, mileage, quantity) of every drop of fuel you put in the car, you really have no basis for even an elementary analysis.
Why? The engine was broken in at the factory. There is little time will change, unless they did a bad job, then it will burn oil excessively like my '92 GTS Celica did.
We have a winner. Engine break-in takes about 30 minutes start to finish from a dry fire. At the end of the 30 minutes, you'll be at WOT and you'll be ready for anything. Since the factory takes the initial fire away from you, it isn't possible to hurt anything. They've already run it hard to seat the rings and mate the valves with their seats - at the factory.
Your engine has been broken in for a very long time. Your mileage increases could just as easily be reformulated fuel based on season, lower alcohol content, using the A/C less as the temperatures drop, etc. etc. Unless you've kept a complete record (date, octane, brand, mileage, quantity) of every drop of fuel you put in the car, you really have no basis for even an elementary analysis.
10-13-14, 08:22 AM
#13
Your engine has been broken in for a very long time. Your mileage increases could just as easily be reformulated fuel based on season, lower alcohol content, using the A/C less as the temperatures drop, etc. etc. Unless you've kept a complete record (date, octane, brand, mileage, quantity) of every drop of fuel you put in the car, you really have no basis for even an elementary analysis.
I do have a question, however. You state that performance doesn't improve over time. The why does Car and Driver's long-term test almost always show improvements in acceleration from when the car was brand new?
10-13-14, 08:30 PM
#14
Tech Info Resource
iTrader: (2)
I've never seen C&D normalize their testing for density altitude. Testing on different days with different weather conditions on different surfaces introduces so many variables it isn't even funny.
Add to that, an engine runs best at WOT just before it is ready to die because friction is at its lowest (everything is well mated) and you get C&D's results.
Add to that, an engine runs best at WOT just before it is ready to die because friction is at its lowest (everything is well mated) and you get C&D's results.