New comer want some help

[robinggood]

Hello,I have a 2006 mazdaspeed6,fully built engine. The turbo is garrett GTX3582 gen II with a T3 0.82A/r twin scroll turbine housing.So I used dual 38mm external wastegates dumped to air.About 3900 rpm it hit rated boost to 15psi,but after 5000 rpm and the wastegates completely opened, the car doesn't push at all.Did I choose the wrong wastegates ?Were they too big?My tuner said so.But the log said Afr/spark/boost all seems healthy.
It only make about 240whp as you can see at high rev torque drop off seriously.My goal is shooting at 600 whp.In early time I tried single 44mm/single 60mm/dual 44mm.But all same trouble.

In early time,my car suffer slightly overboosting,so I rebuild 3 manifold to solve the problem.First is single 44mm wastegate,after 5000rpm,boost keep climbing upon with rev,from 15 psi to 20 psi until rev hit 6000.And then I change to a 60mm single.But maybe the manifold or wastegate angle it doesnt help.So I fabricated a new manifold and run dual 44mm wastegates.This time it doesn't go boost creeping,but as I said in high rpm causing power loss.Until now the 3rd manifold and dual 38mm wastegate still dont get power.I have checked spark plug.They seems running good and did compression test,still no problem.
The engine is fully built,forged CP piston,molnar rod,kelford camshaft with many other modifications. Maybe I should check some other things.
My engine block and some of the parts

Spark plug checked few days ago. Log file the last

 

[SharksInSpace]

 

[_Mazdarati]

Who is tuning the car? Do you have the proper springs in the wastegate?

 

[JohnnyTightlips]

From your garbage log the WGDC is only at 10% you are not going to much over spring pressure with that. You need to take a better log. Start at 2500 rpm in 3rd gear and floor it 'WOT' until 6800. If it is breaking up, stop but send the log.

Looks like you are also out of fuel. IDC is through the roof. That would cut power fast. You will need port injection fuel or meth to feed a turbo as large as you have. The stock direct injection system can not do enough.



https://www.revisionsrus.com/logs/1423

 

[robinggood]

Who is tuning the car? Do you have the proper springs in the wastegate?

I do have read tial spring file,my goal is 1.8~2.0bar and the springs was black+red

 

[robinggood]

From your garbage log the WGDC is only at 10% you are not going to much over spring pressure with that. You need to take a better log. Start at 2500 rpm in 3rd gear and floor it 'WOT' until 6800. If it is breaking up, stop but send the log.

Looks like you are also out of fuel. IDC is through the roof. That would cut power fast. You will need port injection fuel or meth to feed a turbo as large as you have. The stock direct injection system can not do enough.
View attachment 14333


https://www.revisionsrus.com/logs/1423

I don't use factory EBCS so the wastegate duty was useless.I run a HKS EVC IV IR2.4 to control the boost.But for now the EVC was shut off.Boost controlled by spring.

 

[robinggood]

From your garbage log the WGDC is only at 10% you are not going to much over spring pressure with that. You need to take a better log. Start at 2500 rpm in 3rd gear and floor it 'WOT' until 6800. If it is breaking up, stop but send the log.

Looks like you are also out of fuel. IDC is through the roof. That would cut power fast. You will need port injection fuel or meth to feed a turbo as large as you have. The stock direct injection system can not do enough.
View attachment 14333


https://www.revisionsrus.com/logs/1423

And I use a ford ST intake manifold with damond manifold adapter.Maybe my picture link failed.The aux fuel controlled by a haltech1000.

 

[_Mazdarati]

I do have read tial spring file,my goal is 1.8~2.0bar and the springs was black+red

So from the Tial chart I am reading, the black and red spring is only a 14psi (~1 bar) spring as far as I can see it.

I don't use factory EBCS so the wastegate duty was useless.I run a HKS EVC IV IR2.4 to control the boost.But for now the EVC was shut off.Boost controlled by spring.

So you're not even utilizing the factory/a 3 port EBCS and instead run to another separate unit? That's just asking for problems.

 

[Awafrican]

I don't use factory EBCS so the wastegate duty was useless.I run a HKS EVC IV IR2.4 to control the boost.But for now the EVC was shut off.Boost controlled by spring.

Why no ebcs? Also are those corks port cams I see on the pic?

 

[robinggood]

So from the Tial chart I am reading, the black and red spring is only a 14psi (~1 bar) spring as far as I can see it.



So you're not even utilizing the factory/a 3 port EBCS and instead run to another separate unit? That's just asking for problems.

As I lived in china.In aisa EVC is more popular.Actually I still in boost creep a little.Spring was for 14psi but go 16 psi in practice.

 

[_Mazdarati]

As I lived in china.In aisa EVC is more popular.Actually I still in boost creep a little.Spring was for 14psi but go 16 psi in practice.

Just because it's popular doesn't mean it works.

Yes, that's normal. You're not always going to exactly hit 14psi on a spring, you'll almost always overshoot it especially depending on the turbo.

 

[robinggood]

Why no ebcs? Also are those corks port cams I see on the pic?

Yes, I used CS camshaft and throttle body.Most of my friend run big turbo don't run factory EBCS.As is a street car,we like EVC more,it can change boost rapidly.

 

[robinggood]

Just because it's popular doesn't mean it works.

Yes, that's normal. You're not always going to exactly hit 14psi on a spring, you'll almost always overshoot it especially depending on the turbo.

So should I tune HPFP map to raise the DI pressure?I got corksport HPFP internal,but run in stock pressure map.

 

[JohnnyTightlips]

So should I tune HPFP map to raise the DI pressure?I got corksport HPFP internal,but run in stock pressure map.

I would ditch the HKS as it looks to only be 3 port which you can do control over in the factory ECU or even use the haltech to control boost. You are making this very complicated. I would do this to get started.

• Factory ECU for boost control and tuning "get a good base map 10% wgdc"
• Disable any corrections that the ECU tries to make for boost and let it only do the wgdc you tell it to.
  
• Find out where IDC hits 80% and flatten the mafcal so that Port Injection 'haltech' can take fill in up top fuel.
• Use the haltech to add that PI on top of the DI , keeping IDC close to 80 on the DI will keep the car happy
• Be aware that load values will drop as PI increases , make sure to adjust timing in those areas
• You should never be going over 80%ish DI IDC if your PI is working right to hit AFR up top.

With multiple systems working together this all gets crazy pretty quick. You need to do it all in small steps. If you need more boost control later on look at what the haltech can offer as you already own that. The hardest part about this will be getting those systems to blend together nicely. You really need someone that is familiar with how the factory ecu works.

 

[JohnnyTightlips]

Yes, I used CS camshaft and throttle body.Most of my friend run big turbo don't run factory EBCS.As is a street car,we like EVC more,it can change boost rapidly.

No one here is running the factory EBCS we are all running a 3 port mac valve. Like this one. Which is needed as soon as you get away from the stock turbo.
https://www.grimmspeed.com/electronic-boost-control-solenoid-3-port-mazdaspeed-3/

 

[robinggood]

I would ditch the HKS as it looks to only be 3 port which you can do control over in the factory ECU or even use the haltech to control boost. You are making this very complicated. I would do this to get started.

• Factory ECU for boost control and tuning "get a good base map 10% wgdc"
• Disable any corrections that the ECU tries to make for boost and let it only do the wgdc you tell it to.
  
• Find out where IDC hits 80% and flatten the mafcal so that Port Injection 'haltech' can take fill in up top fuel.
• Use the haltech to add that PI on top of the DI , keeping IDC close to 80 on the DI will keep the car happy
• Be aware that load values will drop as PI increases , make sure to adjust timing in those areas
• You should never be going over 80%ish DI IDC if your PI is working right to hit AFR up top.

With multiple systems working together this all gets crazy pretty quick. You need to do it all in small steps. If you need more boost control later on look at what the haltech can offer as you already own that. The hardest part about this will be getting those systems to blend together nicely. You really need someone that is familiar with how the factory ecu works.

Thanks alot to your suggesstion. My tuner is familiar to stock ECU and haltech,he suggest I choose haltech to take control of PI and spark advance.But for now virus 2019-nCoV keep him in Taiwan,I can't find the reason where power get lost.??

 

[Awafrican]

@JohnnyTightlips +1 for the info. Cobb or grimspeed ebcs will suit you better on this platform.

 

[robinggood]

@JohnnyTightlips +1 for the info. Cobb or grimspeed ebcs will suit you better on this platform.

So as to my trouble,fuel IDC causing power loss in?

 

[JohnnyTightlips]

So as to my trouble,fuel IDC causing power loss in?

Yes, if you are hitting that high of IDC the stock ECU will pull timing and power and all sorts of other things because no matter where the AFR is it thinks the motor is going to blow up. From the factory it is set to 80. This is how it looks in versatune. You likely have many other things going on so you just need to work through them one at a time.

 

[robinggood]

Yes, if you are hitting that high of IDC the stock ECU will pull timing and power and all sorts of other things because no matter where the AFR is it thinks the motor is going to blow up. From the factory it is set to 80. This is how it looks in versatune. You likely have many other things going on so you just need to work through them one at a time.

View attachment 14352

So I will try to run PI and lower DI IDC,thanks. But in early time I use haltech take control of total ignition,that means stock ECU cant pull timing in practice but still lose power.
Will keep update and thanks everbody.