LS motor halp??

[whitetrash]

98 z28

bought this car last week from an individual and drove it home about 60 miles. Been driving for a few days with no issues till these codes popped up. Still runs fine just has the codes. Mods are 706 heads and a hot cam, shift kit and cat back.

P0102 maf low frequency
P0174 bank 2 lean
P0300 random misfire

The misfire could be a simple tune up but I'm unsure of the other 2. Any help will be greatly appreciated

Also car has not been tuned to my knowledge

[jw33]

Needs a LID/cut-out/!CAGS/Mobil-1/Zaino in that order.

[JC316]

The MAF can cause all of those codes. If it has been tuned, they might have screwed it up, the 98's have a different PCM and there aren't many good options for handheld tuners.

[BP]

Make sure it has a MAF screen still and there isn't K&N oil all over the element.

[Juiced4v]

Clean out the MAF...

[Sam88gta1]

Very seldom does cleaning the maf fix a 102 code. If it has the screen in it remove the screen and clean it. The p0300 is because of the cam.

[fastwhite99gt]

It will need to be tuned to get rid of the misfire code, gotta turn off the reporting or turn the count way up that triggers the light.

[whitetrash]

Ok I'll clean the maf and I had planned to have it tuned in a few months, that may get moved up

[uglydogo]

I had similar problem on my 01 Chevy truck. And I replace everything that it said to. And it was the knock sensors. Might be that.