Hi guys. So huge lack of updates on my part. But nothing has really happened.
I was struggling with massive power loss issues a while back. And managed to get
@Osiris to test drive my car to make sure I wasn't just getting it all in my head. And sure enough he confirmed that my car felt like it was holding back. And really struggling. So after some intensive research, I came across this thread
https://www.n54tech.com/forums/showthread.php?t=26639
In summary. It was regarding the plausibility of the stock secondary cats getting blocked. And draining the car of power.
So. I made the decision to go to SupaQuick (I know, there are loads of more reputable exhaust shops around, but for testing purposes I just went to them as they were close by.)
Once the car was up, they removed the cats. And this is what the result was.
Right side Cat. This is ok-ish. As the honeycomb mesh shows direct line of sight.
Left side Cat. Totally blocked. No light at all going through.
So the Secondary cats were straight piped. Job was decent. Albeit I'll be looking at a full system in the future. This will do for now.
The result was impressive. I had my boost back. and car was responsive again. However I had a raspy exhaust tone on Cold start.
I started driving WOT to test and noted that my car in Map 5 was seeing 21psi when the JB4 was only requesting 15psi.
Then the inevitable happened. On a WOT test the boost spike at 22psi and off went my Charge pipe from the throttle body.
Now, to my detriment I removed the upgraded aluminum charge pipe and forge DVs for testing boost leaks initially with afzil. And the car remained this way, well, till now.
I managed to limp the car to an underground parking lot. This is when I noticed the charge pipe came off. So with some tools I managed to get it back on. Plugged in the TMAP again. and drive home with my tail between my legs.
The next day I stripped the old charge pipe (didnt break or crack to my surprise but I noticed that the Oring was missing.
So I called up Osiris and he offered to bring some extra o rings he had.
While waiting for him I took the chance to inspect the vacuum canisters. Which were perfect.
The only Vacuum lines that weren't replaced were from the Intake Manifold to the DV's so I had this done very carefully with the spare Vac line that Afzil gave me.
Nick arrived and we went about replacing the Charge Pipe. All went back perfectly. I'm currently using the Stock DV for now till I can properly service my Forge units.
We went for a test drive and wala. Boost on target with every pull.
Seeing as I have a Back End Flash with my JB4. The boost is slightly higher than standalone JB4.
So Map 5 I'm requesting just over 15psi. And I'm reaching that. Slightly higher. But nothing crazy. Maybe 0.5psi above target.
Map 2 got me reaching 19psi max on a target of just over 17psi.
I do not have the fuel yet for daily driving on Map 2 as my timing is not great on that map. So I am staying on Map 5 and enjoying the car again.
Car is really feeling good. And the raspy exhaust note has settled very well and the car actually sound so good. Will try get a sound or video clip of it when I can.
Thanks guys