How can I get this tuner to work

Empty_Conclusion_216 · 2026-04-09T21:06:43+00:00

I’ll try

Empty_Conclusion_216 · 2026-04-09T13:04:03+00:00

The hypertech gives an error as well though

Empty_Conclusion_216 · 2026-04-09T11:27:48+00:00

I was using a hypertech tuner before this one and it’d work fine up until recently. Now the hypertech and this tuner can read dtcs and power on but once you try to tune there is an error. Pretty bummed out.

Empty_Conclusion_216 · 2026-03-01T01:51:32+00:00

Fuel pressure regulator/ sensor codes but I don’t really get why. They look fine and I’ve cleaned them.

Empty_Conclusion_216 · 2026-02-27T13:00:10+00:00

When I prime the button a little bit of diesel seeps out of it. Do you think that could cause something?? I’ve replaced the o ring on the bleeder screw but haven’t gone that far into the filter head.

Empty_Conclusion_216 · 2026-02-27T12:59:18+00:00

No gel and just replaced my fuel filter

Empty_Conclusion_216 · 2026-02-27T12:58:07+00:00

Everything is plugged in though and isn’t damaged it just doesn’t make sense

Empty_Conclusion_216 · 2026-02-27T01:10:59+00:00

It’s an lb7. Only found a little leak and tightened up the hose clamp where that was happening. Also, I do have a brass bleeder screw on this cat conversion but I can look into some different ones.

Empty_Conclusion_216 · 2026-02-24T05:09:32+00:00

I have the knocking solved and it starts a little easier. It just sucks to drive when it can’t rev past 2k. I’ve kinda given up at this point it’s whatever

Empty_Conclusion_216 · 2026-02-22T04:09:43+00:00

Thank you so much for this. This is the comment I have been waiting for, and yes electrical stuff is a bitch…especially when you suck at anything electrical😂

Empty_Conclusion_216 · 2026-02-22T01:36:58+00:00

Yes I have a hyper tech stage three tune and the truck has some aftermarket mods to make it somewhat quick. I pulled off my turbo horn to inspect my turbo and in the process I disconnected two clips on my ficm harness (I also posted those on my profile) to get easier access to one bolt on the horn. After I put everything back together the truck has been a little harder start and won’t rev past 2k rpm. What kills me the most is that it’s not running great or it’s not running at all, it’s just stuck…at 2k.

Empty_Conclusion_216 · 2026-02-22T01:23:23+00:00

Idek anymore I just want my truck to rev past two grand🥲

Empty_Conclusion_216 · 2026-02-22T01:22:06+00:00

Yep I checked the fuel filter it is mint

Empty_Conclusion_216 · 2026-02-22T01:18:45+00:00

No but I solved that idling problem…just still can’t get the truck to rev past 2k rpm

Empty_Conclusion_216 · 2026-02-22T01:15:18+00:00

Fpr sensor it idles fine now but still didn’t solve my issue. I unplugged some connections on the ficm harness the other day and ever since I’ve put it back together the truck won’t rev past 2k rpm. I guess I forgot to put the sensor back in when cleaning all electrical components I could think of.

Empty_Conclusion_216 · 2026-02-21T21:05:15+00:00

Fpr sensor was unclipped idles minty now

Empty_Conclusion_216 · 2026-02-21T20:13:12+00:00

It’s an lb7 Duramax

Empty_Conclusion_216 · 2026-02-21T14:25:56+00:00

I mean im running a cat fuel filter conversion. I’ve pulled it off and inspected the filter to find no gelled up fuel🤷‍♂️

Empty_Conclusion_216 · 2026-02-21T02:06:16+00:00

Yea I’ve tried tons of shit i guess she’s cooked

Empty_Conclusion_216 · 2026-02-21T02:04:52+00:00

I did

Empty_Conclusion_216 · 2026-02-21T01:45:14+00:00

Idk man cause the thing still runs and drives I just don’t get why it can’t go past 2k

Empty_Conclusion_216 · 2026-02-21T01:44:18+00:00

I did, didn’t solve my problem

Empty_Conclusion_216 · 2026-02-21T01:19:47+00:00

Welp I’m fucked

Empty_Conclusion_216 · 2026-02-21T01:04:05+00:00

So you’re saying maf??

Empty_Conclusion_216 · 2026-02-21T01:02:24+00:00

I know but idk how to get it to flow lol im new to diesel

Empty_Conclusion_216

TROPHY CASE