Let's talk spider injection

Biggershaft96 · Apr 12, 2017

Please do. Thats alot cheaper than amazons delphi until.

big_mike · Apr 12, 2017

slowburb said:
I tried three different MPFI setups to get one that worked. First Sorenson, then Standard, then Delphi. In that order. I did not try a Delco because it was not an available to me option at the time. I'd stay away from anything but Delphi, because of what I observed on my truck. With the way the L31 is so picky about ignition parts, I've concluded it's the same for fuel system parts.

IiRC, the Wynjammer spiders call for certain walbro pumps, which are hotter than stock.

My advice, this is not a part you can cheap out on.

What was the issues you had with the other brands if you don't mind explaining so others and myself can be more informed on this topic.

slowburb · Apr 12, 2017

The cheap ones caused random misfire.

big_mike · Apr 13, 2017

slowburb said:
The cheap ones caused random misfire.

Did you notice a lower fuel pressure with those units or discover why they would cause that? Subpar injectors, bad regulators, ect...

slowburb · Apr 13, 2017

I took no notes along the way, just kept swapping until something worked.

Annihilator · Apr 23, 2017

I am a happy Delphi customer as well.

olduglyforeman · Apr 28, 2017

I Bought the fj504 years ago and the bracket underneath so the o ring doesnt leak at the intake . Lube that seal much easier. The yukon l31 also got a cam , distributor , at the same time for rough idle was poppets stuck at idle.
CAm was 14097395 and under$200 delivered. Runs great 5 years now.

jeffrey · May 17, 2017

Maybe a longshot but is there an easy way to check for an mpfi upgrade short of taking the upper intake off and looking? I'd like to know if mine has been replaced but don't want to risk ruining the gasket seal just for curiosity. Thanks.

superdave · May 17, 2017

You can take air intake tube off the throttle body. Open up the throttle plate all the way and peek in with a flashlight. The original spider will be just little tubes.

jeffrey · May 17, 2017

superdave said:
You can take air intake tube off the throttle body. Open up the throttle plate all the way and peek in with a flashlight. The original spider will be just little tubes.

Sweet, thanks for that.

Let's talk spider injection

Biggershaft96

Cant Getrite

big_mike

I'm Awesome

slowburb

all motor

big_mike

I'm Awesome

slowburb

all motor

Annihilator

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olduglyforeman

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jeffrey

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superdave

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jeffrey

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