Turbo BS Thread

I parked it late Feb so it just sat for a while but I did change the alternator recently.
I'm getting an occasional maf code p0100 so I'm looking into that but what's funny is the obd2 scanner shows me the intake temp and maf readings properly so im not sure why its throwing a code when at the same time I can read the sensor lol. I have 3 oem denso mafs and swapping them made no change. I also swapped to my spare ecu and there was no change, So my next mission will be to check the wire traces. O2 seem to be reading what they should as well.

I'm probably going to start saving for a Holley terminator x max lol

 

@Rola2010

I dont know any mild steel, but Ace Race sells stainless steel bits fwiw.

 

Thanks - Ace Race does have some mild steel stuff but it's fairly limited, and most of what I've found online is from plumbing shops, so I may just try to source something locally.

 

I know a guy that has more than 1 plumbing piece in his set up... And maybe a piece of trampoline frame as well...

 

Anyone ever have a blocked exhaust, cat? I'm having issues building boost, everything under the hood checks out.
I can recommend these kits, they work well:

$96 OTC 5605 Deluxe Compression Tester Kit with Carrying Case for Gasoline Engines

OTC 5605 Compression

$89 Mityvac MV8500 Silverline Elite Automotive Test Kit Provides both Vacuum and Pressure to Perform Engine Performance Diagnostics, Brake Bleeding, Fluid Transfer, Evacuation, Windshield Repair Jobs

Mityvac MV8500 Vacuum/Pressure

 

Is it noticeably weaker under throttle? I had a pin hole once in my gauge supply and thought I was having issues. Found it when I did pressure test for leaks.

 

I had a blocked cat on a Na Nissan truck. Wouldn't run much higher than 1500 rpm and minimal pedal input.

Also check for cracks/exhaust leaks pre turbo.

 

Runs butter smooth through all rpm and builds to 2 psi quick, it maintains it but not past it.

 

I did ace race parts for my manifold but that was forever ago when we didn't have material shortages.

I had a clogged cat once. Makes the truck feel like it's constipated or trying to rev out but it's not wanting to.

 

@05Taco4x4
Cracked coupler/ boost leak?

 

My manifold didn't suffer that, I posted a pic of it recently; it is possible it has since happened but I doubt that, from the outside it looks ok.

 

Possible blown gasket? Should be a noticeable sound of it.

 

I replaced it recently, looks to still be there.

 

This problem is on the exhaust side, I'm 100% confident not on the charge side.

 

Melted cat? Clogged air filter?

 

2 psi WG spring

 

Maybe but I don't think so, no and no haha

 

Something with the w/g could be bad. Whenever you have the chance to attach it to an air compressor, you could check its operation.

 

I did, it's good too.

 

What about disconnecting the exhaust and seeing if it spools better. The afr will be off but you'll know by sound if it's clogged.