Huge boost after EBC install

shadow85 · 08-22-2018, 09:59 PM

I had a Greddy Profec EBC installed last week. Even with the EBC switched off, I hit 14.5psi, where as before the EBC install running stock wastegate pressure I would max boost pressure out to 8psi.

Anyone experienced this or know why after installing the EBC my minimum boost pressure @ WOT has had a major jump, even when the EBC is switched off or put into 0%?

Faulty install or fault EBC, solenoid etc?

Car has AAM TT system.

Jinxx · 08-23-2018, 09:17 AM

Quote:

Originally Posted by shadow85

I had a Greddy Profec EBC installed last week. Even with the EBC switched off, I hit 14.5psi, where as before the EBC install running stock wastegate pressure I would max boost pressure out to 8psi.

Anyone experienced this or know why after installing the EBC my minimum boost pressure @ WOT has had a major jump, even when the EBC is switched off or put into 0%?

Faulty install or fault EBC, solenoid etc?

Car has AAM TT system.

It kinda sounds like you may have the vacuum line on the upper port on one of your wastegates instead of the lower port could be a simple oversight ....I have the tial wastegates and there are several ports on the upper part and a upper side port can easily be mistaken for a lower port ...I did that myself ......late night car modding after few too many beers lol

jwick · 08-23-2018, 12:03 PM

Is t the AAM kit internally gated?

shadow85 · 08-24-2018, 02:47 AM

Yes aam kits are internal.

I had the workshop double check the vac routing and they rekon everything is correct.

solidus · 08-29-2018, 10:04 AM

I have the Greddy Profec Oled. If you're seeing 14.5 with the EBC off and not wastegate , theres a problem with your plumbing. The Greddy is like Voodoo magic to set up and I wouldn't bother it if you haven't figured it out yet. Plumbing is a different story, scree that up and you will guaranteed pop your motor. It's a $15k exercise and you don't get a tee shirt.

shadow85 · 09-02-2018, 11:47 PM

Ok, the same workshop was about to pull the EBC off but decided to do some re-routing of the VAC lines instead.

And wadda ya know, the boost does not rise past 8.5 psi now with the EBC switched off.

Martijn_b · 09-06-2018, 03:11 PM

Do you know the differences precisely?

Verstuurd vanaf mijn SM-G950F met Tapatalk

shadow85 · 12-01-2018, 08:35 AM

No. But the same issue occured again only weeks after.

This time it was due to a vacuum line melting. They replaced it with a braided piece.

And now my issue is the EBC won't increase boost past 7,5 psi no matter what setting I use!?

Martijn_b · 12-01-2018, 02:57 PM

Can you post a drawing of how you routed the EBC?

Verstuurd vanaf mijn SM-G950F met Tapatalk

James10694 · 12-05-2018, 02:14 AM

Sounds like some of the issues I've been having. How did they find the melted vacuum line? I think mine might be melted too.

jchammond · 12-05-2018, 06:24 AM

Quote:

Originally Posted by James10694

Sounds like some of the issues I've been having. How did they find the melted vacuum line? I think mine might be melted too.

May be related to your question James; I helped Madwi with his & silicone vacuum line goes from long nipple on left bank inlet pipe (just before throttle body) and around & over top of transmission into a “T”... where it splits into 2 equal length hoses & connects to 1 nipple on each of the 2 Tiel wastegates.
Hose has heat shielding slid over every inch.
The other silicone hose goes from the drilled & tapped port in front of intake to the blowoff valve on left front,,,just before intercooler.
Hope this helps some.

08-22-2018, 09:59 PM	#1 (permalink)
shadow85 Track Member Join Date: Jul 2015 Location: South Australia, Austra Posts: 918 Drives: 15' 370Z A/T AMM TT Rep Power: 25	Huge boost after EBC install I had a Greddy Profec EBC installed last week. Even with the EBC switched off, I hit 14.5psi, where as before the EBC install running stock wastegate pressure I would max boost pressure out to 8psi. Anyone experienced this or know why after installing the EBC my minimum boost pressure @ WOT has had a major jump, even when the EBC is switched off or put into 0%? Faulty install or fault EBC, solenoid etc? Car has AAM TT system.

08-23-2018, 12:03 PM	#3 (permalink)
jwick A True Z Fanatic Join Date: Dec 2010 Location: Houston Posts: 14,532 Drives: '10 G37 6MT Rep Power: 2465057	Is t the AAM kit internally gated? __________________ '10 G37T 6MT Graphite/Graphite - BP - G37T Build

08-29-2018, 10:04 AM	#5 (permalink)
solidus Track Member Join Date: Oct 2014 Location: Orlando, Florida Posts: 694 Drives: 15' Nismo Black 6MT Rep Power: 10081	I have the Greddy Profec Oled. If you're seeing 14.5 with the EBC off and not wastegate , theres a problem with your plumbing. The Greddy is like Voodoo magic to set up and I wouldn't bother it if you haven't figured it out yet. Plumbing is a different story, scree that up and you will guaranteed pop your motor. It's a $15k exercise and you don't get a tee shirt. Hotrodz, TBatt, Jayhovah and 1 others like this.

09-06-2018, 03:11 PM	#7 (permalink)
Martijn_b Enthusiast Member Join Date: Jan 2018 Location: Netherlands Posts: 280 Drives: 2010 370z MB 6MT Rep Power: 3786	Do you know the differences precisely? Verstuurd vanaf mijn SM-G950F met Tapatalk __________________ Instagram: Boosted_Fairlady

12-01-2018, 02:57 PM	#9 (permalink)
Martijn_b Enthusiast Member Join Date: Jan 2018 Location: Netherlands Posts: 280 Drives: 2010 370z MB 6MT Rep Power: 3786	Can you post a drawing of how you routed the EBC? Verstuurd vanaf mijn SM-G950F met Tapatalk __________________ Instagram: Boosted_Fairlady

08-24-2018, 02:47 AM	#4 (permalink)
shadow85 Track Member Join Date: Jul 2015 Location: South Australia, Austra Posts: 918 Drives: 15' 370Z A/T AMM TT Rep Power: 25	Yes aam kits are internal. I had the workshop double check the vac routing and they rekon everything is correct.

09-02-2018, 11:47 PM	#6 (permalink)
shadow85 Track Member Join Date: Jul 2015 Location: South Australia, Austra Posts: 918 Drives: 15' 370Z A/T AMM TT Rep Power: 25	Ok, the same workshop was about to pull the EBC off but decided to do some re-routing of the VAC lines instead. And wadda ya know, the boost does not rise past 8.5 psi now with the EBC switched off.

12-01-2018, 08:35 AM	#8 (permalink)
shadow85 Track Member Join Date: Jul 2015 Location: South Australia, Austra Posts: 918 Drives: 15' 370Z A/T AMM TT Rep Power: 25	No. But the same issue occured again only weeks after. This time it was due to a vacuum line melting. They replaced it with a braided piece. And now my issue is the EBC won't increase boost past 7,5 psi no matter what setting I use!?

12-05-2018, 02:14 AM	#10 (permalink)
James10694 Track Member Join Date: Oct 2013 Location: Las Vegas NV Posts: 917 Drives: 2010 370z Nismo Rep Power: 13	Sounds like some of the issues I've been having. How did they find the melted vacuum line? I think mine might be melted too. __________________ Boosted Performance Single Turbo 618whp/489 tq

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
370z Exhaust- Huge Selection/Huge Stock/ Huge Savings!!!	JM Auto Racing	Exhaust/Intake	473	11-28-2022 01:53 PM
Cost of EGT and boost gauge install	6mt370	Engine & Drivetrain	3	05-20-2015 11:43 AM
huge props to two forum members. FI CBE + Stillen g3 install	Lothario	Intake/Exhaust	3	09-16-2013 08:16 AM
Defi red racer boost gauge install	VQStryker	DIY Section (Do-It-Yourself)	0	04-20-2012 01:17 AM