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  1. Nick88

    Dual exhaust question.

    I want to completely get rid of the factory 2.25 Y pipe. I don’t want to spend a whole bunch to get a 2.5 inch kit, but I have a ton of left over 3 inch exhaust piping. My question is, with a 1988 TBI 350, I know 3 inch duals is massive massive overkill, but if I use some 2 1/4 inch mufflers I...
  2. Nick88

    Gas Mileage

    With these trucks, gas mileage is not a strong suit, although, fuel economy can be increased for relatively cheap and especially with the price of gas, will save you a lot of money. I did some mods to my truck which helped my 350 TBI in a 1988 square body Blazer get in the 20s cruising on the...
  3. Nick88

    Code 32 with a high flow exhaust.

    I have a 1988 350 TBI vin K. Little back story, my old ECM was shot and wouldn’t recognize a faulty egr. I found the cheap egr I had was failed and could not hold vacuum, so I replaced it with a new AC Delco that I confirmed works perfectly. I resistance tested solenoid and verified voltage at...
  4. Nick88

    Important Wiring Question

    On my 1988 k5 Blazer 350 tbi i want to work on the esc to narrow down a timing issue, I want to rewire the ground of esc to manifold and run a new wire to the knock sensor. I have a red wire, blue wire, black/red, and black wire running to the esc. Which wire is for what? Any help is appreciated.
  5. Nick88

    Good Scanner to Use??

    I’ve finally decided after recent issues to get a scanner for my TBI 350 to read live data. Has anyone tried Innova 3170RS? It’s for obd1 and 2 and it’s available in store near by to me. Has anyone tried this scanner? Would it be able to read live obd1 data?
  6. Nick88

    Hey guys I have a timing issue.

    Hey, I have a 1988 k5 blazer with tbi 350/700r4/np208. I have this strange issue where when i start driving, the timing advances then immediately starts retarding, causing the truck to be very sluggish. This is accompanied by a awful idle when warming up and sometimes code 45 (running rich). I...
  7. Nick88

    Grounding question!

    kind of a random question, but does anyone know what the ground is on the back of the the intake manifold sorta underneath the distrubutor, it has two wires going into a single eye connector
  8. Nick88

    Hey Guys I Need Help Quick

    Hey im new here, i have a 1988 K5 Blazer tbi (i know not gmt400 but you guys know a lot about tbi) Ive been having this issue where the truck will run super rich causing it to be very sluggish and guzzle gas. There is no smoke out the tailpipe but i went from averaging over 15 down to getting...

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