Help differents VF30 vs TD05H
#1
Hi everybody,
please do not look weird if there is a lot of faulty grammars!
Today I have swap my Vf30 to a TD05H (stock only make it front entry)because there is a lot of good experience of the TD05H. Normally I made 314 bhp with the VF30, now when I have the TD05H I only make 251 bhp. This is based on my Apexi RSM?
When I made 314 with the VF30 my setup was:
HKS Hiper
HKS downpipe
Stock header
Unichip
Boost setup was: 1.35 bar
314 Bhp
Now my TD05H setup is:
Apexi GTSpec backbox
Apexi GTspec downpipe
Aftermarket (no branche) header ( I think is not a equal length)
Unichip (still the programm of the VF30)
Boostsetup is : 1.35 bar
254 BHP
I thought the TD05H is bigger then the VF30 so it suppost will make over 315 bhp, but why it is only 254 bhp. Is the setup not correct??
What I experience is that 3000 - 4750 rpm there is a lot of torque, but above it looks like it hold in no power at all!
Can somebody tell me why?? Do I have to use my VF30 instead of the TD05H?
Hope somebody will tell me! Very desperate!!
Help!!!!!!
Every comments are welcome
Regards Mike
please do not look weird if there is a lot of faulty grammars!
Today I have swap my Vf30 to a TD05H (stock only make it front entry)because there is a lot of good experience of the TD05H. Normally I made 314 bhp with the VF30, now when I have the TD05H I only make 251 bhp. This is based on my Apexi RSM?
When I made 314 with the VF30 my setup was:
HKS Hiper
HKS downpipe
Stock header
Unichip
Boost setup was: 1.35 bar
314 Bhp
Now my TD05H setup is:
Apexi GTSpec backbox
Apexi GTspec downpipe
Aftermarket (no branche) header ( I think is not a equal length)
Unichip (still the programm of the VF30)
Boostsetup is : 1.35 bar
254 BHP
I thought the TD05H is bigger then the VF30 so it suppost will make over 315 bhp, but why it is only 254 bhp. Is the setup not correct??
What I experience is that 3000 - 4750 rpm there is a lot of torque, but above it looks like it hold in no power at all!
Can somebody tell me why?? Do I have to use my VF30 instead of the TD05H?
Hope somebody will tell me! Very desperate!!
Help!!!!!!
Every comments are welcome
Regards Mike
#5
I have double check all the hoses, and maybe, maybe the intercooler hose is not fitted well. I have felt that the hose is a little bit off. This maybe explains why it feels dead by higher revs.
#6
It was not the hoses, i have double check everything.
I have tested today and my experience; the boost dropped at > 4500 rpm from 1.40 bar to 0.8 bar. Before 4500 it make beautifull boost, but after.....
Someone know what this is? My boost is controlled by the Apexi avc-r.
Hope someone can tell me!!
Mike
ps:If I do not use the controller the boost is 0,8 bar from 300 rpm to 6500 rpm, so this is correct
I have tested today and my experience; the boost dropped at > 4500 rpm from 1.40 bar to 0.8 bar. Before 4500 it make beautifull boost, but after.....
Someone know what this is? My boost is controlled by the Apexi avc-r.
Hope someone can tell me!!
Mike
ps:If I do not use the controller the boost is 0,8 bar from 300 rpm to 6500 rpm, so this is correct
Trending Topics
#12
Tested again.
The apexi retuned but dit not solve the problem. The boost still drops at 4500 rpm to 0,8bar
Set the duty cicle to 88% at 5000 rpm, and the boost still dropping. F*ck. Everytime after 4500 it drops, why?????????
Know I have change the actuater, but I think this is not the problem, but you never know.
Is my apexi solenoid damaged??
Guys tell me what to do!!!! Please!!! Very desperate!!!
Mike ;-(
The apexi retuned but dit not solve the problem. The boost still drops at 4500 rpm to 0,8bar
Set the duty cicle to 88% at 5000 rpm, and the boost still dropping. F*ck. Everytime after 4500 it drops, why?????????
Know I have change the actuater, but I think this is not the problem, but you never know.
Is my apexi solenoid damaged??
Guys tell me what to do!!!! Please!!! Very desperate!!!
Mike ;-(
#13
Scooby Regular
Join Date: Nov 2000
Location: 32 cylinders and many cats
Posts: 18,658
Likes: 0
Received 1 Like
on
1 Post
It is a little tricky, but try disconnecting and leaving open to atmosphere the pneumatic feed to the actuator and then go to wide open throttle at 5000 RPM and see if it boosts better then. Be ready to lift off because if it is healthy it will spool to 25 PSI very quickly and it will probably just carry on beyond 30 PSI. If so then there is a boost controller issue. If not then you need to look at the turbo/actuator. Also consider when the turbo spools this high what ignition/fuel map you use so that you do not get detonation whilst experimenting. It is a risky procedure if you can't be ready to back off very quickly, but it will tell you either way.
#15
Scooby Regular
Join Date: Nov 2000
Location: 32 cylinders and many cats
Posts: 18,658
Likes: 0
Received 1 Like
on
1 Post
I don't know the details of the Apexi to know what you can do to sort it. But it doesn't sound like the turbo or actuator if it will make the boost. Maybe it worked fine with the VF30 because of the way they tend to boost creep. Maybe there is a problem with the Apexi solenoid or its pipework.
#17
I have just plug the hoses to the oem solenoid, the results are the same. The boost is still dropping like hell at 5000 rpm.
I think the boost is still dropping when I disconnect the hoses to the wastegate. Because the boost is rizing to fast to see, I thought the boost is hold on. But I do not think so after I have use the stock solenoid. It can not be that the two solenoid is damaged.
What can I do.
I have try the following thing without any results:
Re-setting the AVC-R
Drive without the actuater
Plug to the stock solenoid
Tighten teh actuator
Change the actuator
Double check all the hoses
When I change the vf30 to the td05 I also change the header at the same time. Is it possible that the header makes the dropping?
Mike
I think the boost is still dropping when I disconnect the hoses to the wastegate. Because the boost is rizing to fast to see, I thought the boost is hold on. But I do not think so after I have use the stock solenoid. It can not be that the two solenoid is damaged.
What can I do.
I have try the following thing without any results:
Re-setting the AVC-R
Drive without the actuater
Plug to the stock solenoid
Tighten teh actuator
Change the actuator
Double check all the hoses
When I change the vf30 to the td05 I also change the header at the same time. Is it possible that the header makes the dropping?
Mike
#19
Scooby Regular
Join Date: Nov 2000
Location: 32 cylinders and many cats
Posts: 18,658
Likes: 0
Received 1 Like
on
1 Post
Yes it could be. Try waiting till 5500 RPM with no pneumatic feed. If the wastegate is being blown open then even at sustained WOT it will not go higher than it does with your boost controller. Still be cautious, but see if you can try it.
#20
huuummm...just fitted headers?
Checked slip joints (if they have any)?
Checked joint to head / up-pipe. Maybe damaged uppipe during fitting?
Dropping boost at high rpm could be caused by a leak, although you would most likely hear it?
Checked slip joints (if they have any)?
Checked joint to head / up-pipe. Maybe damaged uppipe during fitting?
Dropping boost at high rpm could be caused by a leak, although you would most likely hear it?
#25
Subaru Tuning Specialist
Join Date: Jun 2002
Location: 7.74 @179 mph 1/4 mile - road legal
Posts: 6,654
Likes: 0
Received 1 Like
on
1 Post
The Samco inlet hoses are prone to partially collapsing at high air flows, this throttles the air inlet and dramatically reduces the boost at higher RPM.
There is not an easy solution to this due to the location I have had a result by shortening the hose at the turbo end and then stretching it on, leaving no extra hose to pull together due to suction. Either that or try the OEM inlet back on ??
There is not an easy solution to this due to the location I have had a result by shortening the hose at the turbo end and then stretching it on, leaving no extra hose to pull together due to suction. Either that or try the OEM inlet back on ??
#28
I do not think the hose is collapse otherwise it will happen to the vf30.
Do you know how many turn do I have to tighten the actuator, for 1.0 bar?? Or 1 turn = x bar, somebody knows???
Do you know how many turn do I have to tighten the actuator, for 1.0 bar?? Or 1 turn = x bar, somebody knows???
#29
My tuner also says the combination of a equal lenght header cause this problem. When he tunes a car with a td05 + aftermarket header the boost did not hold till 7000 rpm. A lot of people here have the same problem. A solution will be a upgraded actuator (1.0 bar for example) and set the AVC-R at 90% duty cycle.
Are you guys agree what they say?
I am trying to tighten the actuator but do not manage to set at 1.0 bar or 1.1. bar. Or it gives 0,76 bar or 1,56 bar
Mike
Are you guys agree what they say?
I am trying to tighten the actuator but do not manage to set at 1.0 bar or 1.1. bar. Or it gives 0,76 bar or 1,56 bar
Mike
#30
I do not think the hose is collapse otherwise it will happen to the vf30.
Do you know how many turn do I have to tighten the actuator, for 1.0 bar?? Or 1 turn = x bar, somebody knows???
Do you know how many turn do I have to tighten the actuator, for 1.0 bar?? Or 1 turn = x bar, somebody knows???
Carlos H.