IS200t tune
#1802
Lexus Champion
Thread Starter
Ov replied to me about their tune and boost pressure
"
Note, as I think a few people have been getting confused on our advertised boost. We see a PEAK psi of 24psi under ideal conditions. This does not mean the car will always run 24psi and to rev limit, the turbo is simply quite small for this. We see this peak psi in the lower rpm."
So that initial surge in boost in the low RPM must be what gets them the Big TQ numbers sheddy showed us. The OV tune plus the piggyback must be interesting like is200Tfowl is doing. Would probably need modifications to the turbo charger size or the waste gates that regulate the pressure to hold higher boost till redline.
Any updates on the Stage 2+ tune or the turbo modification tony? I am ready to buy!!
"
Note, as I think a few people have been getting confused on our advertised boost. We see a PEAK psi of 24psi under ideal conditions. This does not mean the car will always run 24psi and to rev limit, the turbo is simply quite small for this. We see this peak psi in the lower rpm."
So that initial surge in boost in the low RPM must be what gets them the Big TQ numbers sheddy showed us. The OV tune plus the piggyback must be interesting like is200Tfowl is doing. Would probably need modifications to the turbo charger size or the waste gates that regulate the pressure to hold higher boost till redline.
Any updates on the Stage 2+ tune or the turbo modification tony? I am ready to buy!!
Last edited by Sheddy; 10-24-17 at 07:19 AM.
#1803
I do agree that the turbo is very small and runs out of breath in the higher rpm range. Very similar to my FBO 1.8T VW APR tuned, where it would spike 21-22 PSI and then eventually lower as the RPM increased. TTI has done a lot of testing to ensure that there's a balance in power by adjusting the boost, timing, VVTI engagement etc , so you will get that peak boost for the torque and it will slowly taper down while still making high end power as well. Stage 2 + will be released soon!
#1804
Lexus Champion
Thread Starter
I do understand. I just wanted to give an example of another setup where the boost tapers down at the higher rpm due to a stock small turbo, and done by a reputable tuning company like APR.
The following users liked this post:
IS200TFOWL (10-25-17)
#1805
Lexus Champion
Thread Starter
Tony shared this screenshot with me. TTI is using the Techstream system which is what the dealership uses to do system checks, updates and also list some important engine parameters. These values are at 39MPH @ 2713RPM with Stage 2 +
83MPH @ 5410RPM
Techstream Diagnosis
Using the Techstream the technician can monitor the specific data lines that allow them to see what is happening in the turbocharger system. The data lines listed below are data that is directly related to the turbocharger system and should be used during the diagnosis of the turbocharger system.
Intake Air Temperature B1S1 (Turbo) – Intake temperature coming from the No. 1 Turbo Pressure Sensor located in the intake manifold. This sensor reports the intake air temperature after going through the intercooler. Can be used to diagnose intercooler efficiency. Wastegate Valve Control Duty Ratio – Target duty cycle that the VRV is receiving from the ECM to control the wastegate valve actuator.
Intercooler Water Pump Speed – The RPM of the intercooler water pump. The intercooler water pump can range from 2,000 to 7,000 RPM’s when operating.
Target Boost Pressure – The intake air pressure that the ECM is trying to receive from the turbocharger system. This data list item is labeled in absolute PSI reading. Therefore the technicians will see a target boost of close to 15 PSI when the vehicle is at idle. This is a normal condition, because atmospheric pressure is close to 15 PSI absolute. During boost conditions under WOT, the target boost will reach approximately 30 PSI, which means the ECM is requesting the maximum boost pressure of 17.4 PSI from the turbocharger system. 30-12.6= 17.4 PSI STOCK
Boost Pressure Sensor - The absolute pressure inside the intercooler. This pressure reading comes from the No. 2 Turbo Pressure Sensor. The data list item is also read in absolute PSI.
If we calculate according to this write up we will get these values for Stage 2 +
Target boost pressure
2713 RPM 33.72-12.6=21.12 PSI
5410 RPM 34.66-12.6= 22.06 PSI
For those who would say that barometric pressure should be at 14.7 PSI then
30-14.7= 15.3 PSI Stock
33.72-14.7=19.02 PSI Stage 2 + @ 2713 RPM
34.6-14.7= 19.9 PSI Stage 2 + @ 5410 RPM
We are still seeing an increase of +4 PSI with Stage 2 +
83MPH @ 5410RPM
Techstream Diagnosis
Using the Techstream the technician can monitor the specific data lines that allow them to see what is happening in the turbocharger system. The data lines listed below are data that is directly related to the turbocharger system and should be used during the diagnosis of the turbocharger system.
Intake Air Temperature B1S1 (Turbo) – Intake temperature coming from the No. 1 Turbo Pressure Sensor located in the intake manifold. This sensor reports the intake air temperature after going through the intercooler. Can be used to diagnose intercooler efficiency. Wastegate Valve Control Duty Ratio – Target duty cycle that the VRV is receiving from the ECM to control the wastegate valve actuator.
Intercooler Water Pump Speed – The RPM of the intercooler water pump. The intercooler water pump can range from 2,000 to 7,000 RPM’s when operating.
Target Boost Pressure – The intake air pressure that the ECM is trying to receive from the turbocharger system. This data list item is labeled in absolute PSI reading. Therefore the technicians will see a target boost of close to 15 PSI when the vehicle is at idle. This is a normal condition, because atmospheric pressure is close to 15 PSI absolute. During boost conditions under WOT, the target boost will reach approximately 30 PSI, which means the ECM is requesting the maximum boost pressure of 17.4 PSI from the turbocharger system. 30-12.6= 17.4 PSI STOCK
Boost Pressure Sensor - The absolute pressure inside the intercooler. This pressure reading comes from the No. 2 Turbo Pressure Sensor. The data list item is also read in absolute PSI.
If we calculate according to this write up we will get these values for Stage 2 +
Target boost pressure
2713 RPM 33.72-12.6=21.12 PSI
5410 RPM 34.66-12.6= 22.06 PSI
For those who would say that barometric pressure should be at 14.7 PSI then
30-14.7= 15.3 PSI Stock
33.72-14.7=19.02 PSI Stage 2 + @ 2713 RPM
34.6-14.7= 19.9 PSI Stage 2 + @ 5410 RPM
We are still seeing an increase of +4 PSI with Stage 2 +
Last edited by Sheddy; 10-25-17 at 09:09 AM.
The following 2 users liked this post by Sheddy:
daniellina (10-25-17),
TTITony (10-26-17)
#1806
Solid results. I'd love to see the the boost curve on the dyno, see how long it holds pressure and how soon it hits max pressure. I can't wait to get my tune. Solid +4psi through the power range.
The following users liked this post:
daniellina (10-25-17)
#1807
Lexus Champion
Thread Starter
Definitely! Once i get my hands on the Stage 2+ i'll have it strapped to the dyno. I would also like to test a fuel mixture of E20 or E30 and see how it performs.
The following users liked this post:
TTITony (10-26-17)
#1808
Pole Position
We are gonna have dyno tests right away and see the difference between the 2 cars with different mods and fuel mixtures using the stage 2 +. with the breathing mods like the charge pipe and the turbo muffler we are going to be able to keep a slightly better boost curve according to Tony.
#1810
Tony shared this screenshot with me. TTI is using the Techstream system which is what the dealership uses to do system checks, updates and also list some important engine parameters. These values are at 39MPH @ 2713RPM with Stage 2 +
83MPH @ 5410RPM
Techstream Diagnosis
Using the Techstream the technician can monitor the specific data lines that allow them to see what is happening in the turbocharger system. The data lines listed below are data that is directly related to the turbocharger system and should be used during the diagnosis of the turbocharger system.
Intake Air Temperature B1S1 (Turbo) – Intake temperature coming from the No. 1 Turbo Pressure Sensor located in the intake manifold. This sensor reports the intake air temperature after going through the intercooler. Can be used to diagnose intercooler efficiency. Wastegate Valve Control Duty Ratio – Target duty cycle that the VRV is receiving from the ECM to control the wastegate valve actuator.
Intercooler Water Pump Speed – The RPM of the intercooler water pump. The intercooler water pump can range from 2,000 to 7,000 RPM’s when operating.
Target Boost Pressure – The intake air pressure that the ECM is trying to receive from the turbocharger system. This data list item is labeled in absolute PSI reading. Therefore the technicians will see a target boost of close to 15 PSI when the vehicle is at idle. This is a normal condition, because atmospheric pressure is close to 15 PSI absolute. During boost conditions under WOT, the target boost will reach approximately 30 PSI, which means the ECM is requesting the maximum boost pressure of 17.4 PSI from the turbocharger system. 30-12.6= 17.4 PSI STOCK
Boost Pressure Sensor - The absolute pressure inside the intercooler. This pressure reading comes from the No. 2 Turbo Pressure Sensor. The data list item is also read in absolute PSI.
If we calculate according to this write up we will get these values for Stage 2 +
Target boost pressure
2713 RPM 33.72-12.6=21.12 PSI
5410 RPM 34.66-12.6= 22.06 PSI
For those who would say that barometric pressure should be at 14.7 PSI then
30-14.7= 15.3 PSI Stock
33.72-14.7=19.02 PSI Stage 2 + @ 2713 RPM
34.6-14.7= 19.9 PSI Stage 2 + @ 5410 RPM
We are still seeing an increase of +4 PSI with Stage 2 +
83MPH @ 5410RPM
Techstream Diagnosis
Using the Techstream the technician can monitor the specific data lines that allow them to see what is happening in the turbocharger system. The data lines listed below are data that is directly related to the turbocharger system and should be used during the diagnosis of the turbocharger system.
Intake Air Temperature B1S1 (Turbo) – Intake temperature coming from the No. 1 Turbo Pressure Sensor located in the intake manifold. This sensor reports the intake air temperature after going through the intercooler. Can be used to diagnose intercooler efficiency. Wastegate Valve Control Duty Ratio – Target duty cycle that the VRV is receiving from the ECM to control the wastegate valve actuator.
Intercooler Water Pump Speed – The RPM of the intercooler water pump. The intercooler water pump can range from 2,000 to 7,000 RPM’s when operating.
Target Boost Pressure – The intake air pressure that the ECM is trying to receive from the turbocharger system. This data list item is labeled in absolute PSI reading. Therefore the technicians will see a target boost of close to 15 PSI when the vehicle is at idle. This is a normal condition, because atmospheric pressure is close to 15 PSI absolute. During boost conditions under WOT, the target boost will reach approximately 30 PSI, which means the ECM is requesting the maximum boost pressure of 17.4 PSI from the turbocharger system. 30-12.6= 17.4 PSI STOCK
Boost Pressure Sensor - The absolute pressure inside the intercooler. This pressure reading comes from the No. 2 Turbo Pressure Sensor. The data list item is also read in absolute PSI.
If we calculate according to this write up we will get these values for Stage 2 +
Target boost pressure
2713 RPM 33.72-12.6=21.12 PSI
5410 RPM 34.66-12.6= 22.06 PSI
For those who would say that barometric pressure should be at 14.7 PSI then
30-14.7= 15.3 PSI Stock
33.72-14.7=19.02 PSI Stage 2 + @ 2713 RPM
34.6-14.7= 19.9 PSI Stage 2 + @ 5410 RPM
We are still seeing an increase of +4 PSI with Stage 2 +
Sorry been away guys was busy with family stuff
#1811
Lexus Champion
Thread Starter
Very rare to have cooler weather in South FL, so why not take advantage!
#1813
Lexus Champion
Thread Starter
Installed my de-catted PPE Engineering down pipe.
Last edited by Sheddy; 11-06-17 at 07:42 AM.
The following users liked this post:
TTITony (11-01-17)
#1814
Driver School Candidate
I know that plenty of yours seem to be very interested only by Stage2 or Stage2+ but for people which does not wish to modify the car the Stage1 is also very interesting and performing.
Below the Dyno for both situations (stock/Stage1). The display was set to the same RPM allowing good comparative results.
For me with the TCM tune, it is very pleasant to drive and in Sport Mode/manual gear it is fantastic on little twisting roads.
Thanks again Tony for this job.
Below the Dyno for both situations (stock/Stage1). The display was set to the same RPM allowing good comparative results.
For me with the TCM tune, it is very pleasant to drive and in Sport Mode/manual gear it is fantastic on little twisting roads.
Thanks again Tony for this job.
#1815
Lexus Champion
Thread Starter
I know that plenty of yours seem to be very interested only by Stage2 or Stage2+ but for people which does not wish to modify the car the Stage1 is also very interesting and performing.
Below the Dyno for both situations (stock/Stage1). The display was set to the same RPM allowing good comparative results.
For me with the TCM tune, it is very pleasant to drive and in Sport Mode/manual gear it is fantastic on little twisting roads.
Thanks again Tony for this job.
Attachment 469340
Below the Dyno for both situations (stock/Stage1). The display was set to the same RPM allowing good comparative results.
For me with the TCM tune, it is very pleasant to drive and in Sport Mode/manual gear it is fantastic on little twisting roads.
Thanks again Tony for this job.
Attachment 469340