2jz gte boosting problems

[chase350z]

tody2016-05-08_13.36.40.msl

2jz gte vvti with mspnp pro
iam having trouble with building boost nothing over 0 psi will ever show

[chase350z]

today2016-05-08_13.18.36.csv

its not producing any boost at all . i have checked the wg and all the intercooler piping and vacuum lines.
still no boost.

please help

[nathaninwa]

Post your msq as well. With key off, does the map gauge read 100kp?

Regardless you should build Wastegate pressure. You have done a boost leak test with soapy water and like 20psi test?

[chase350z]

working ecu_2016-05-08_13.41.56.msq

msq

[chase350z]

it does read 100kpa and my boost gauge reads no boost aswell the hole time.

i have not done A BOOST leak test yet

[nathaninwa]

Do you have a large turbo? That datalog you don't really do anything to produce boost. You have one area where your 100% tps but stop short around 3000 and the rest are just blips. You need some 3rd gear pulls from 2000 to redline

I also see your vvti with vvti turned off. I don't know how to tune vvti but I get the cams are full retard which will cause issues too

Get the vvti working and a boost leak test done

[nathaninwa]

You also have one, sync loss reason 84. Which is a decoder specific error. Have you added any buffering to the vr sensors?

[nathaninwa]

How is the Wastegate setup? If external is the valve seat installed?

[chase350z]

it has a 6266 and no i do not have any buffers
i didn't want to mess with the vvti tell i got it working right. i will have to do some searching to get the proper vvti settings

How is the Wastegate setup? If external is the valve seat installed?

it has a external it is installed i have checked the the wg and it does not open or leak any exhaust

[chase350z]

tody2016-05-08_13.36.40.msl

sorry the last data-lo
g was the wrong one

Do you have a large turbo? That datalog you don't really do anything to produce boost. You have one area where your 100% tps but stop short around 3000 and the rest are just blips. You need some 3rd gear pulls from 2000 to redline

I also see your vvti with vvti turned off. I don't know how to tune vvti but I get the cams are full retard which will cause issues too

Get the vvti working and a boost leak test done

[chase350z]

still not even a hint of boost and revving or driving

[grom_e30]

does the turbo spin freely.

[chase350z]

does the turbo spin freely.

Yes it does

[nathaninwa]

My laptop is dead currently. Do you have a boost gauge in the car and is it working? Do you have a greater than 1 bar map sensor installed?

[BigLou240sx]

Echo Nathan's question above, and Where is your boost guage and map sensor connected? Not potentially downstream of a check valve that feeds a brake booster?

[chase350z]

My laptop is dead currently. Do you have a boost gauge in the car and is it working? Do you have a greater than 1 bar map sensor installed?

I have a 4 bar map sensor. And the boost gauge and map sensor get there signal off of the manifold on there own port. And yes I have a boost gauge that worked before the ecu and turbo upgrade and it shows the same info that the ecu is no boost at all

[nathaninwa]

Ok, need to ask again. You got vvti working? Did a boost leak test to like 20psi?

One more test, start a datalog and use some compressed air on the map sensor line and verify it will read boost. Might be a bum sensor. Could datalog while your boost leak testing

Imo, this is not a megasquirt issue since you should mechanically reach Wastegate pressure, unless the map is bad

[chase350z]

I got the vvti working

Ok, need to ask again. You got vvti working? Did a boost leak test to like 20psi?

One more test, start a datalog and use some compressed air on the map sensor line and verify it will read boost. Might be a bum sensor. Could datalog while your boost leak testing

Imo, this is not a megasquirt issue since you should mechanically reach Wastegate pressure, unless the map is bad

I got the vvti working. And I did a leak test to 15 psi no leaks. And my boost gauge read 15 psi .

[slow_hemi6]

The place that makes your turbo kit shows a graph which has your 6266 making boost from about 2500rpm and being @ 5psi ish 3000rpm. It shows a peak of 34psi about 5600rpm. Have you contacted them at all about this issue?

[chase350z]

I emailed them Saturday of they don't get back to me mid Monday iam going to give them a call. I think the turbo is at fault