Low/dropping boost?

[Eric Huppert]

So, finally installed my chipped ECU in the glacier blue. Old ECU was
putting out 11 lbs - 1.7ish which was about right for stock.

 

Initial road test with new ECU had 21 lbs on first hit. Then shortly
thereafter would only go to apx 15 lbs. 

 

Then discovered that if I shut the vehicle off and restarted I'd get 21 lbs
again?

 

No codes, although I did get a 1111 once (typical for chipped ECU's)

 

Car runs smooth and well, will pull to apx 7k with no problems

 

History, all work in last month or so, purchased in Feb and worked on till
recently

 

Full tune-up to include narrow tip rotor

Timing belt etc.

New bosch correct oxygen sensor

Gutted cats

Replaced all vacuum lines

Replaced FPR with know good as original crapped out

Cleaned ground points

Ben swan chip, wastegate spring,  2.5pt (consistent 21 lbs)

New throttle body hose

Samco hoses

Forge bypass valve

Fuel injectors sent out for cleaning/testing

 

Checked:

 

IAT sensor, ohmed out okay

TPS, checked out good

Altitude sensor, checked, seems okay, pulled sensor from car that had
chipped ECU and put in

ECU ground to body, good!

Disconnected MFTS to see if any difference (reducing boost)

Checked waste gate control, ohms correct and clicks with output test.
Believe it's good? Was going to swap parts car solenoid in, but that one
does not ohm out correctly! (then again, maybe I should as that did pull to
21 lbs?

 

Haven't pressure checked intake/hoses yet, but a leak usually causes idling
issues and it idles great. Have the samcos and all new hoses... Seems more
electrical?

 

Thoughts????

 

Eric