legacy revd help

[patrickc22]

Good morning all since going to front mount i am eather getting over 22psi or getting limited to waste gate pressure before i had done front mount and i did hose 10 mod i would get over 22psi but not get limited to wast gate pressure.

Where should i start looking to solve this problem the previous owner told me it had a tune with this affect it in anyway and yes i do know i need to get a tune for going front mount just want to make sure my boost issue will not be their when i go to get a tune 

 

[Guest]

When you did the hose 10 mod you just cut and blocked where the 1.5mm pill is?

 

[patrickc22]

The only one I know should have come out is 2.0mm pill do you know the exact location of the 1.5mm 

 

[patrickc22]

So after getting a chance to have a good look pill 2mm and 1.5mm will be gone

 

 

On another note my black car is ready to get a wof

[patrickc22]

I have found an air leak witch I need to get a new hose for 

[B4 I was 250T]

I replaced all my hoses with silicone ones man, other than that you can probably get 4mm hose at Supercheap or Repco

 

[patrickc22]

Yeah I will be replacing all of them to but the worst one it right before the intercooler once that is fixed it hopefully will fix the bosst issue 

Edited December 27, 2016 by patrickc22
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[A_J_T]

22psi sounds very high, does it hold that over 5k rpm or is it spiking to 22 on primary and then managing boost better when the secondary comes in? what boost is it holding at 6k rpm?

 

Regardless of if its been tuned or not Its going into limp mode, when the ECU detects too much knock and cant sort it out by pulling timing the ECU will cut boost to wastgate spring - 7psi.

 

Mine would do this in its TT japan spec tuned state when i lived north and only had 95. it will stay limited until it goes a certain time without detecting knock, so if you take it for a polite cruise or reset the ECU by disconnecting the battery it will come right, but 22 is way too high on those twins, those lil turbos will just be thrashing hot air, possibly be better off on less boost with a more dense charge. Seen good results on these running 17-18 psi with a tune. without a known good tune stick to 14psi imho

[patrickc22]

Do you think fixing the hose would bring it back down 

It did fisrt start doing when I did hose 10 mod 

Or should I give the sensors a clean 

[A_J_T]

Yea if it started hitting high boost after the "Hose 10" mod id suggest something went wrong. Either revert changes and see how you go or check vac diagram and ensure you have the mod setup correctly. Hose 10 mod did nothing for my Rev-D, just moved the slight VOD higher into the rpm. but others have had different results.

[patrickc22]

Hose 10 is back to stock as much as I can  

Have after market blow of value witch is vta will report results tomorrow 

[patrickc22]

So back to normal as much as possible and on both turbos only went up to about 15psi but car would fell like it is serging and would end up getting limited to wgp check engine light came back on but can check it until I get to Auckland 

[A_J_T]

See what the CEL is about, let us know. Vent to atmosphere BOV will make it surge coming on and off throttle and run super rich on idle unless its adjustable and wound tight so no venting when on idle vac. wgp/limp mode sounds like detonation but could be a number of things including venting bov, maybe o2 sensor related idk. CEL code will tell

[patrickc22]

So the obd2 scanner is bought isn't working so have bought another one hopefully this works 

[A_J_T]

Pretty sure this method works on the Gen3 for checking fault codes etc. 

 

http://www.subyclub.com/topic/1273-howto-checking-and-resetting-ecu-error-codes/

[1randomkiwi]

Go see @Subirex Automotive

You can also find the Gen3 Legacy Workshop Manual here: http://sdrv.ms/15Q1lzO