300 rwhp is350?
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Driver
Joined: Aug 2011
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From: GA
300 rwhp is350?
Has anyone cleared 300rwhp with bolt on's on the is350 w/o N02? Thinking ppe headers and JoeZ full xpipe with cats?
Anyone coming to the Hennessy Lexus meet Saturday that has the JoeZ's so I can hear them in person?
We are hoping for 2 LFA's and a surprise 2013 "guest"
Anyone coming to the Hennessy Lexus meet Saturday that has the JoeZ's so I can hear them in person?
We are hoping for 2 LFA's and a surprise 2013 "guest"
Thread Starter
Driver
Joined: Aug 2011
Posts: 190
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From: GA
Isn't he the guy with the piggyback ECU? When you go to the 0-60/1/4 mile sites they list some pretty quick IS350's, but no details as to what has been done to them. There is even one that has supposdly broke into the 12's... and lots of 13.2/13.3's... they have to have some mods, right?
Also 4.8's 0-60? on a 13.3 ? I haven't ran my wifes IS350 yet, but Lexus claims a good bit slower. Is Lexus that conserative, are or the fellows doing more mods than I'm finding?
Also 4.8's 0-60? on a 13.3 ? I haven't ran my wifes IS350 yet, but Lexus claims a good bit slower. Is Lexus that conserative, are or the fellows doing more mods than I'm finding?
he's running a MAPECU3 setup....
Lexus is that conservative. Road and Track got 4.9 0-60 out of a bone stock IS350. (Lexus times are likely done with traction control left on too)
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Driver
Joined: Aug 2011
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From: GA
As to the traction control... I had heard guys are leaving the is350 in "normal" and "drive" verses power and sport? It sure feels a good bit quicker in power/sport mode...
So what is the best lanch/run setting for this car... and why would that be?
So what is the best lanch/run setting for this car... and why would that be?
From a dead stop?
Traction control and VSC both off.
ECT-Normal mode
Shifter left in D
That'll produce the fastest times, because everything else slows you down... (TC by pulling power on launch, ECT because power mode actually shifts at lower rpms, and D because the computer is a lot faster than you are and the paddles aren't really shifters anyway)
ECT-Power is only useful in part-throttle or on/off throttle driving like in traffic in the middle/upper gears... it slows you down in a drag race from a stop.
Thread Starter
Driver
Joined: Aug 2011
Posts: 190
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From: GA
From a dead stop?
Traction control and VSC both off.
ECT-Normal mode
Shifter left in D
That'll produce the fastest times, because everything else slows you down... (TC by pulling power on launch, ECT because power mode actually shifts at lower rpms, and D because the computer is a lot faster than you are and the paddles aren't really shifters anyway)
ECT-Power is only useful in part-throttle or on/off throttle driving like in traffic in the middle/upper gears... it slows you down in a drag race from a stop.
Traction control and VSC both off.
ECT-Normal mode
Shifter left in D
That'll produce the fastest times, because everything else slows you down... (TC by pulling power on launch, ECT because power mode actually shifts at lower rpms, and D because the computer is a lot faster than you are and the paddles aren't really shifters anyway)
ECT-Power is only useful in part-throttle or on/off throttle driving like in traffic in the middle/upper gears... it slows you down in a drag race from a stop.
The VSC and traction control off makes sense..
But I thought the sport mode for the transmission held the gear to a higher rpm, and shifted harder? And why would the power mode, if the intent is for more power,, why would it sharpen the throttle response, only to shift at a lower RPM? It seems counterintuitive to what one would think… I wonder why?
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I wonder if anyone has done any V box runs to test this?
The VSC and traction control off makes sense..
But I thought the sport mode for the transmission held the gear to a higher rpm, and shifted harder? And why would the power mode, if the intent is for more power,, why would it sharpen the throttle response, only to shift at a lower RPM? It seems counterintuitive to what one would think… I wonder why?
The VSC and traction control off makes sense..
But I thought the sport mode for the transmission held the gear to a higher rpm, and shifted harder? And why would the power mode, if the intent is for more power,, why would it sharpen the throttle response, only to shift at a lower RPM? It seems counterintuitive to what one would think… I wonder why?
ECT-Power doesn't change throttle response either, it changes transmission behavior, but shifts lower.
Gernby did datalogging to prove that point-
https://www.clublexus.com/forums/3042656-post38.html
But that post is in a 7 page thread where others confirm the results, including those who did a fair # of 1/4 mile runs and always got better results in Normal mode than Power.
To see exactly what power mode DOES do, see here:
https://www.clublexus.com/forums/3305550-post10.html
As to SPORT mode- nope, useless. Gernby (in that same 7 page thread) tested putting the car in S mode/6 then repeating his tests and he got the same results as when the car was in D.
Just thought I'd bring this up, seemed like a good time to.
In the HKS F-ConIs I have the ablity to tune shift points. I can tune in the following points.
1) RPM base
2) Shift timing ----I mean the actual speed of the shift! Not just at what point it shifts
3) Timing Accel or Decay via shift
4) Rev limit setting
5) Speed Cut Def.......HKS SCD built in to the unit and yes it works for auto's in this program.
I have done most of my tuning just in this area. Most of the issues I found was Lexus pulls 7 degrees of timing between shifts. Thats equals @ 15HP of power loss before the shift.
All of the sluggish feeling when using the paddle shifters is due to the timing decay. Lexus issues the change point 300rpm before shift with a .100 shift speed.
I have changed this to 50 RPM and .010 shift speed. I raised the Rev limit to 7000rpm. I still shift at the same 6500rpm tho due to VVt-i tuning issues. ( Stock ECU just doesn't know what to do with the cams after @ 6800rpm.) CEL everytime I try to go higher REV's
Here is the funny part.
I'm pulling 12-18 degrees of timing for boost. Then the Stock ECU pulls another 7 degrees. So thats 25 degrees of timing. Ouch!
I removed the 7 degrees of stock timing decay on the shift point. The IS350 now shifts so swift and crisp it sounds like an Indy car shift. The "crack of a whip" sound. I no longer hit the rev limit in "D" mode.
Now! I know this is going to kill the clutches over time but I don't care
In the HKS F-ConIs I have the ablity to tune shift points. I can tune in the following points.
1) RPM base
2) Shift timing ----I mean the actual speed of the shift! Not just at what point it shifts
3) Timing Accel or Decay via shift
4) Rev limit setting
5) Speed Cut Def.......HKS SCD built in to the unit and yes it works for auto's in this program.
I have done most of my tuning just in this area. Most of the issues I found was Lexus pulls 7 degrees of timing between shifts. Thats equals @ 15HP of power loss before the shift.
All of the sluggish feeling when using the paddle shifters is due to the timing decay. Lexus issues the change point 300rpm before shift with a .100 shift speed.
I have changed this to 50 RPM and .010 shift speed. I raised the Rev limit to 7000rpm. I still shift at the same 6500rpm tho due to VVt-i tuning issues. ( Stock ECU just doesn't know what to do with the cams after @ 6800rpm.) CEL everytime I try to go higher REV's
Here is the funny part.
I'm pulling 12-18 degrees of timing for boost. Then the Stock ECU pulls another 7 degrees. So thats 25 degrees of timing. Ouch!
I removed the 7 degrees of stock timing decay on the shift point. The IS350 now shifts so swift and crisp it sounds like an Indy car shift. The "crack of a whip" sound. I no longer hit the rev limit in "D" mode.
Now! I know this is going to kill the clutches over time but I don't care
Last edited by HKS350; Oct 13, 2011 at 07:41 AM.
Pole Position
Joined: Oct 2011
Posts: 312
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From: wa
From a dead stop?
Traction control and VSC both off.
ECT-Normal mode
Shifter left in D
That'll produce the fastest times, because everything else slows you down... (TC by pulling power on launch, ECT because power mode actually shifts at lower rpms, and D because the computer is a lot faster than you are and the paddles aren't really shifters anyway)
ECT-Power is only useful in part-throttle or on/off throttle driving like in traffic in the middle/upper gears... it slows you down in a drag race from a stop.
Traction control and VSC both off.
ECT-Normal mode
Shifter left in D
That'll produce the fastest times, because everything else slows you down... (TC by pulling power on launch, ECT because power mode actually shifts at lower rpms, and D because the computer is a lot faster than you are and the paddles aren't really shifters anyway)
ECT-Power is only useful in part-throttle or on/off throttle driving like in traffic in the middle/upper gears... it slows you down in a drag race from a stop.
Lexus Test Driver
Joined: Aug 2009
Posts: 1,353
Likes: 3
From: Louisiana
Just thought I'd bring this up, seemed like a good time to.
In the HKS F-ConIs I have the ablity to tune shift points. I can tune in the following points.
1) RPM base
2) Shift timing ----I mean the actual speed of the shift! Not just at what point it shifts
3) Timing Accel or Decay via shift
4) Rev limit setting
5) Speed Cut Def.......HKS SCD built in to the unit and yes it works for auto's in this program.
I have done most of my tuning just in this area. Most of the issues I found was Lexus pulls 7 degrees of timing between shifts. Thats equals @ 15HP of power loss before the shift.
All of the sluggish feeling when using the paddle shifters is due to the timing decay. Lexus issues the change point 300rpm before shift with a .100 shift speed.
I have changed this to 50 RPM and .010 shift speed. I raised the Rev limit to 7000rpm. I still shift at the same 6500rpm tho due to VVt-i tuning issues. ( Stock ECU just doesn't know what to do with the cams after @ 6800rpm.) CEL everytime I try to go higher REV's
Here is the funny part.
I'm pulling 12-18 degrees of timing for boost. Then the Stock ECU pulls another 7 degrees. So thats 25 degrees of timing. Ouch!
I removed the 7 degrees of stock timing decay on the shift point. The IS350 now shifts so swift and crisp it sounds like an Indy car shift. The "crack of a whip" sound. I no longer hit the rev limit in "D" mode.
Now! I know this is going to kill the clutches over time but I don't care
In the HKS F-ConIs I have the ablity to tune shift points. I can tune in the following points.
1) RPM base
2) Shift timing ----I mean the actual speed of the shift! Not just at what point it shifts
3) Timing Accel or Decay via shift
4) Rev limit setting
5) Speed Cut Def.......HKS SCD built in to the unit and yes it works for auto's in this program.
I have done most of my tuning just in this area. Most of the issues I found was Lexus pulls 7 degrees of timing between shifts. Thats equals @ 15HP of power loss before the shift.
All of the sluggish feeling when using the paddle shifters is due to the timing decay. Lexus issues the change point 300rpm before shift with a .100 shift speed.
I have changed this to 50 RPM and .010 shift speed. I raised the Rev limit to 7000rpm. I still shift at the same 6500rpm tho due to VVt-i tuning issues. ( Stock ECU just doesn't know what to do with the cams after @ 6800rpm.) CEL everytime I try to go higher REV's
Here is the funny part.
I'm pulling 12-18 degrees of timing for boost. Then the Stock ECU pulls another 7 degrees. So thats 25 degrees of timing. Ouch!
I removed the 7 degrees of stock timing decay on the shift point. The IS350 now shifts so swift and crisp it sounds like an Indy car shift. The "crack of a whip" sound. I no longer hit the rev limit in "D" mode.
Now! I know this is going to kill the clutches over time but I don't care
I just got my wideband installed into the Mapecu and I'm showing 11.2ish at wot redline, whereas on the dyno that day we were well into the 12's. Either their dyno afr was reading very lean, or theres something wrong with this Innovate unit. I doubt it's the innovate, because they clearly say it will never run richer than it actually is.
I dunno, I sanded and polished up the lower plenum and throttle body, then a seafoam clean for the plastic manifold. Now, I just gotta get back on the dyno.
HKS350, keep it up. I'll be following you up soon enough with a mapecu boosted is350.
Advanced
Joined: Oct 2005
Posts: 651
Likes: 3
From: Ontario
Just thought I'd bring this up, seemed like a good time to.
In the HKS F-ConIs I have the ablity to tune shift points. I can tune in the following points.
1) RPM base
2) Shift timing ----I mean the actual speed of the shift! Not just at what point it shifts
3) Timing Accel or Decay via shift
4) Rev limit setting
5) Speed Cut Def.......HKS SCD built in to the unit and yes it works for auto's in this program.
I have done most of my tuning just in this area. Most of the issues I found was Lexus pulls 7 degrees of timing between shifts. Thats equals @ 15HP of power loss before the shift.
All of the sluggish feeling when using the paddle shifters is due to the timing decay. Lexus issues the change point 300rpm before shift with a .100 shift speed.
I have changed this to 50 RPM and .010 shift speed. I raised the Rev limit to 7000rpm. I still shift at the same 6500rpm tho due to VVt-i tuning issues. ( Stock ECU just doesn't know what to do with the cams after @ 6800rpm.) CEL everytime I try to go higher REV's
Here is the funny part.
I'm pulling 12-18 degrees of timing for boost. Then the Stock ECU pulls another 7 degrees. So thats 25 degrees of timing. Ouch!
I removed the 7 degrees of stock timing decay on the shift point. The IS350 now shifts so swift and crisp it sounds like an Indy car shift. The "crack of a whip" sound. I no longer hit the rev limit in "D" mode.
Now! I know this is going to kill the clutches over time but I don't care
In the HKS F-ConIs I have the ablity to tune shift points. I can tune in the following points.
1) RPM base
2) Shift timing ----I mean the actual speed of the shift! Not just at what point it shifts
3) Timing Accel or Decay via shift
4) Rev limit setting
5) Speed Cut Def.......HKS SCD built in to the unit and yes it works for auto's in this program.
I have done most of my tuning just in this area. Most of the issues I found was Lexus pulls 7 degrees of timing between shifts. Thats equals @ 15HP of power loss before the shift.
All of the sluggish feeling when using the paddle shifters is due to the timing decay. Lexus issues the change point 300rpm before shift with a .100 shift speed.
I have changed this to 50 RPM and .010 shift speed. I raised the Rev limit to 7000rpm. I still shift at the same 6500rpm tho due to VVt-i tuning issues. ( Stock ECU just doesn't know what to do with the cams after @ 6800rpm.) CEL everytime I try to go higher REV's
Here is the funny part.
I'm pulling 12-18 degrees of timing for boost. Then the Stock ECU pulls another 7 degrees. So thats 25 degrees of timing. Ouch!
I removed the 7 degrees of stock timing decay on the shift point. The IS350 now shifts so swift and crisp it sounds like an Indy car shift. The "crack of a whip" sound. I no longer hit the rev limit in "D" mode.
Now! I know this is going to kill the clutches over time but I don't care
A nice tight quick shift with little slippage is not going to overheat the trans,...can you monitor the trans temp? If you can you can do some comparisons.Keep the updated posts coming,....love what you've done so far.
