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'93 454 TBI in California...

Hi guys - I am wondering if anyone has any recommendations for California legal bolt-ons for a '93 454. This is not in a GMT400, it's in a P30, but this always seems like the best resource when it comes to TBI truck motors. I'm looking for improvements in the mid-range ... Freeway RPMs hover...
- thesameguy
- Thread
- Jun 24, 2020
- Replies: 13
- Forum: Engine Performance + Maintenance
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P30 454 TBI - Code 44

I've got a '93 P30 motorhome that has started lighting the CEL periodically while cruising at freeways speeds. There didn't seem to be any rhyme or reason - and no drivability issues seem to go with. On a recent trip, I brought along my Tech 2 to see if it could help pinpoint the issue...
- thesameguy
- Thread
- Jun 22, 2019
- Replies: 4
- Forum: Engine Performance + Maintenance
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Possible misfire, or battery issue, or gremlins.

Hi all - This is my first post here, but I've been reading these forums for years and years... but in 20 years of owning Suburbans I've just never had a problem I couldn't get through. This one, though, has be baffled. Sorry for the long post, but I figure I'll get all the details out - I've...
- thesameguy
- Thread
- Mar 9, 2017
- Replies: 14
- Forum: Engine Performance + Maintenance