Hondata Flashpro
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securityguy (02-06-2019)
#84
Installed the stage 2 today and drove 20-30 min in Sport / Sport +.
I would agree with the 15% or so performance increases based on my butt dyno.
It it definitely feels to pickup faster in the 2-4K RPM range.
Sport+ does actually feel quite quick, while sport feels closer to the stock Sport+.
Overall, happy with the upgrade. Very simple process.
Joe
I would agree with the 15% or so performance increases based on my butt dyno.
It it definitely feels to pickup faster in the 2-4K RPM range.
Sport+ does actually feel quite quick, while sport feels closer to the stock Sport+.
Overall, happy with the upgrade. Very simple process.
Joe
#85
Installed the stage 2 today and drove 20-30 min in Sport / Sport +.
I would agree with the 15% or so performance increases based on my butt dyno.
It it definitely feels to pickup faster in the 2-4K RPM range.
Sport+ does actually feel quite quick, while sport feels closer to the stock Sport+.
Overall, happy with the upgrade. Very simple process.
Joe
I would agree with the 15% or so performance increases based on my butt dyno.
It it definitely feels to pickup faster in the 2-4K RPM range.
Sport+ does actually feel quite quick, while sport feels closer to the stock Sport+.
Overall, happy with the upgrade. Very simple process.
Joe
#86
That's not turbo lag you're experiencing, it's the numb response of today's throttle by wire. It takes a moment for pedal signal to be processed by the ECU before making a decision on trans gear selection, etc. I've noticed all newer cars respond similar due to how they're programmed, primarily in the name of economy over performance.
The following users liked this post:
spinedoc777 (02-07-2019)
#87
That's not turbo lag you're experiencing, it's the numb response of today's throttle by wire. It takes a moment for pedal signal to be processed by the ECU before making a decision on trans gear selection, etc. I've noticed all newer cars respond similar due to how they're programmed, primarily in the name of economy over performance.
#88
That's not turbo lag you're experiencing, it's the numb response of today's throttle by wire. It takes a moment for pedal signal to be processed by the ECU before making a decision on trans gear selection, etc. I've noticed all newer cars respond similar due to how they're programmed, primarily in the name of economy over performance.
The ETC operates when the ignition is on even when the engine isn't running. To get an idea of how fast it is capable of responding, turn the vehicle on and all accessories off in a quiet garage then rapidly press and release the accelerator pedal. You can hear the throttle actuator respond almost instantly to the position of the accelerator pedal.
The following 2 users liked this post by zroger73:
Madd Dog (02-07-2019),
spinedoc777 (02-07-2019)
#89
That's not turbo lag you're experiencing, it's the numb response of today's throttle by wire. It takes a moment for pedal signal to be processed by the ECU before making a decision on trans gear selection, etc. I've noticed all newer cars respond similar due to how they're programmed, primarily in the name of economy over performance.
Anyhow I'm forcing myself to like this car!! On the way home from the dealer I put it is Sport + mode and really put it through its paces. I don't really like how the rpm's stay high when cruising, I would have hoped the vehicle would know better when I wanted power and when I wanted to cruise, but using the paddle shifters to shift up helps to make Sport + mode much more bearable. Before Sport + mode wanted me to be in 6th gear and around 4k+ rpm when doing 80 on the highway and not accelerating, but with the paddle shifters I can shift it up to a much more reasonable 8th gear.
Last edited by spinedoc777; 02-07-2019 at 06:06 PM.
#90
Your response is very timely. I just had my RDX in to get the heated steering wheel retrofitted and I had this conversation with the service manager and he said exactly what you said, makes a lot of sense. I've personally never experienced something so bad in any of my modern vehicles so was curious, it's actually somewhat dangerous in situations such as slowing down for a yield but then needing to quickly enter a road. My prior G80 did not do this at all, or it was so slight I never noticed, so I just assumed it was because it was a 6cyl non turbo, but I suppose the programming was different on it.
I noticed it it right away that the trans is in the wrong gear (sometimes 2-3 gears too high) when slowing down for a turn. Then you step on the gas to speed up, but because the gear is so high it doesn’t do anything.
You can test this by really stomping on it next time and you will get the lag, but then the trans will downshift and accelerate wildly.
This one issue is the largest drivability issue with this car. The tune does help it some as there is more power available in the wrong gear, but it’s still a trans issue from what I can see.
#91
Pretty sure what you are experiencing on slowing and then speeding into a turn is a transmission issue.
I noticed it it right away that the trans is in the wrong gear (sometimes 2-3 gears too high) when slowing down for a turn. Then you step on the gas to speed up, but because the gear is so high it doesn’t do anything.
You can test this by really stomping on it next time and you will get the lag, but then the trans will downshift and accelerate wildly.
This one issue is the largest drivability issue with this car. The tune does help it some as there is more power available in the wrong gear, but it’s still a trans issue from what I can see.
More to the point of this thread, can this hesitation be tuned out? I understand it will put more stress on the transmission, but that may be an acceptable trade off. I don't feel as if the RDX needs more power, it's already somewhat of a beast with Sport + mode, it just needs that hesitation to be reduced or eliminated.
Last edited by spinedoc777; 02-07-2019 at 06:13 PM.
#92
Don't forget you can always temporarily over-ride gear selection with the paddle shifters.
If you are in "Drive", just yank the left paddle to downshift sequentially, as many gears as desired. You can upshift manually with the right paddle as necessary, or if you chill for a bit at steady speed, it will resume normal automatic operation.
If you are in "S" mode on the transmission, once you yank a paddle it will stay in "manual sequential" mode until you toggle the transmission to "D" or another setting.
Also, in "S" automatic mode, the controller will keep the engine speed higher for better responsiveness ( at the expense of noise and fuel economy ). This is independent of the "dynamic mode" setting, although its behavior may be altered by the dynamic mode. ( Interesting question... )
Also, if you are experiencing problems with responsiveness, I assume you have tried running the recommended fuel. This is likely to be especially important if you are running an aggressive tune.
If you are in "Drive", just yank the left paddle to downshift sequentially, as many gears as desired. You can upshift manually with the right paddle as necessary, or if you chill for a bit at steady speed, it will resume normal automatic operation.
If you are in "S" mode on the transmission, once you yank a paddle it will stay in "manual sequential" mode until you toggle the transmission to "D" or another setting.
Also, in "S" automatic mode, the controller will keep the engine speed higher for better responsiveness ( at the expense of noise and fuel economy ). This is independent of the "dynamic mode" setting, although its behavior may be altered by the dynamic mode. ( Interesting question... )
Also, if you are experiencing problems with responsiveness, I assume you have tried running the recommended fuel. This is likely to be especially important if you are running an aggressive tune.
Last edited by Wander; 02-07-2019 at 11:29 PM.
#93
If Rahal can do it, so can you (+73HP,+90 lb-ft)
https://www.caranddriver.com/news/a2...m-rahal-semaa/
"The Honda-focused speed shop reworked the RDX ... by putting in a new turbo, intake and exhaust manifolds, and downpipe. PRL Motorsports adds a custom-fabricated intercooler and intake to the mix. GRP's custom lightweight cat-back exhaust and ECU mapping from KTuning round off the package to help boost output to an estimated 345 horsepower and 370 lb-ft, increases of 73 horses and 90 lb-ft of twist over the stock car."
No mention of replacing 10AT!
YMMV.
"The Honda-focused speed shop reworked the RDX ... by putting in a new turbo, intake and exhaust manifolds, and downpipe. PRL Motorsports adds a custom-fabricated intercooler and intake to the mix. GRP's custom lightweight cat-back exhaust and ECU mapping from KTuning round off the package to help boost output to an estimated 345 horsepower and 370 lb-ft, increases of 73 horses and 90 lb-ft of twist over the stock car."
No mention of replacing 10AT!
YMMV.
#94
https://www.caranddriver.com/news/a2...m-rahal-semaa/
"The Honda-focused speed shop reworked the RDX ... by putting in a new turbo, intake and exhaust manifolds, and downpipe. PRL Motorsports adds a custom-fabricated intercooler and intake to the mix. GRP's custom lightweight cat-back exhaust and ECU mapping from KTuning round off the package to help boost output to an estimated 345 horsepower and 370 lb-ft, increases of 73 horses and 90 lb-ft of twist over the stock car."
No mention of replacing 10AT!
YMMV.
"The Honda-focused speed shop reworked the RDX ... by putting in a new turbo, intake and exhaust manifolds, and downpipe. PRL Motorsports adds a custom-fabricated intercooler and intake to the mix. GRP's custom lightweight cat-back exhaust and ECU mapping from KTuning round off the package to help boost output to an estimated 345 horsepower and 370 lb-ft, increases of 73 horses and 90 lb-ft of twist over the stock car."
No mention of replacing 10AT!
YMMV.
Looking into exhaust/intake options this summer.
#95
#96
#99
Why is it people are always so dead set that "the tranny is gunna blow?" Does Acura have that bad of a rep with transmissions? Because aside from some isolated models and situations I don't really see the concern.
#100
So, I have one question. IS IT WORTH GETTING IT?
QUOTE=joeliu2003;16378754]
QUOTE=joeliu2003;16378754]
Installed the stage 2 today and drove 20-30 min in Sport / Sport +.
I would agree with the 15% or so performance increases based on my butt dyno.
It it definitely feels to pickup faster in the 2-4K RPM range.
Sport+ does actually feel quite quick, while sport feels closer to the stock Sport+.
Overall, happy with the upgrade. Very simple process.
Joe
[/QUOTE]
I would agree with the 15% or so performance increases based on my butt dyno.
It it definitely feels to pickup faster in the 2-4K RPM range.
Sport+ does actually feel quite quick, while sport feels closer to the stock Sport+.
Overall, happy with the upgrade. Very simple process.
Joe
#101
So, I have one question. IS IT WORTH GETTING IT?
QUOTE=joeliu2003;16378754]
QUOTE=joeliu2003;16378754]
Installed the stage 2 today and drove 20-30 min in Sport / Sport +.
I would agree with the 15% or so performance increases based on my butt dyno.
It it definitely feels to pickup faster in the 2-4K RPM range.
Sport+ does actually feel quite quick, while sport feels closer to the stock Sport+.
Overall, happy with the upgrade. Very simple process.
Joe
I would agree with the 15% or so performance increases based on my butt dyno.
It it definitely feels to pickup faster in the 2-4K RPM range.
Sport+ does actually feel quite quick, while sport feels closer to the stock Sport+.
Overall, happy with the upgrade. Very simple process.
Joe
Only you can decide that. I still enjoy the improvement ya on a daily basis, but it’s somewhat subjective. I still stand by my original observations as far as performance gains.
#102
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