New CAPs Time with the GT2860RS

[GetBoosted84]

Did a CAPs run today with my new MAFless tune. Thanks Unitronics!

5.2175 Seconds on 20 PSI



Not too shabby. Looks like it's pretty damn good for the GT28 setups listed in the CAPs db.

Just need to figure out why Uni didn't take out the EVAP readiness code.

[Poopie]

Nice. how is she running?

[GetBoosted84]

Nice. how is she running?

Really good. I'm very happy with it except for the EVAP readiness check failing. No codes, just failing that check even though I requested that they kill it.

I need to take some more logs also... then I can hook the meth kit back up and push it a little bit further.

[maxspeed]

whats you timing looking like? exhaust size? got a cat? octane?

sorry for the 21 questions, but i thought a full gt28rs would be a tad faster

[biketsai]

Nice Chris! Unfortunately I am still running into problems, soon to be solved. Id like to hear more about that tune etc.

[Poopie]

run 23 psi and it should be in the 4's which is pretty solid.

[Don Supreme]

If put the maf back on the evap will pass.

[GetBoosted84]

whats you timing looking like? exhaust size? got a cat? octane?

sorry for the 21 questions, but i thought a full gt28rs would be a tad faster

I still have to take some logs of the timing per cylinder. I did a run in second gear but it was too quick so I didn't get any useful data.

Exhaust size is 3" at the downpipe (catless ATP) rolling into a 2.5 to 2.75" Neuspeed catback setup (no resonator/one muffler).

And the fuel octane is 93.

Nice Chris! Unfortunately I am still running into problems, soon to be solved. Id like to hear more about that tune etc.

The tune I have now seems to be a little bit slower than the old tune but I don't get the check engine light for having the MAF disconnected and I can also remove my SAI system as well as a few other things. I was in a 4.8 ~ 4.9 CAPs time range before but that was also under 22 psi of boost so that had an effect on the results also.

What else do you want to want to know about the tune? I'll have some more logs soon.

run 23 psi and it should be in the 4's which is pretty solid.

Yeah, once I get the throttle plate for the meth injection put on I am going to take some logs and bump the boost a little bit.

If put the maf back on the evap will pass.

Really? This is a MAFless tune though. I was hoping I wouldn't have to use the MAF unless the mood strikes me.

I'll give it a shot tonight to see what happens with it.

[bassed]

It's a mafless tune Chris, don't run the maf. Stick to everything as it is and with what it was written to run with and without, you'll pass inspection with 1 readiness (evap). I have the same code and issue with my custom UNI tune. It's not an issue and it's related to the evap canister and or can be solved with a resistor but not by plugging in the maf.

[GetBoosted84]

It's a mafless tune Chris, don't run the maf. Stick to everything as it is and with what it was written to run with and without, you'll pass inspection with 1 readiness (evap). I have the same code and issue with my custom UNI tune. It's not an issue and it's related to the evap canister and or can be solved with a resistor but not by plugging in the maf.

Gotcha. Mike S. @ Uni told me I can run with the MAF and not have any issues. It will just accept the input from that also. When I hook the meth back up I was just going to snip the wire that returns the MAF signal to the ECU though so I wouldn't have to fight that battle and just use it for meth input to make my life a little simplier & easier.

That's good to know that I will pass emissions with that readiness check. That's really the only concern I had.

[bassed]

You're allowed 1 in PA. h20/meth is much better and efficient off the map controler, you'll use much less of a mixture.

[GetBoosted84]

Cool. I was thinking the same thing (using a MAP controller for my meth setup) but Scott @ USRT talked me out of it. Funny that he talked me out of buying a new controller from him so there must be some truth in it. Although I am buying my throttle plate from him so he's not missing out on too much.

He actually said that you can fine tune it a bit further using the MAF setup although you will use a bit more since you are using it based off the air flow readings and not the boost levels. True, it will be easier for a shop to tune for a MAP controller since it's very cut and dry but as long as I know the voltage given back by the MAF sensor / housing combo versus when I want to spray it will be just as easy for me to use that.

[Don Supreme]

It's a mafless tune Chris, don't run the maf. Stick to everything as it is and with what it was written to run with and without, you'll pass inspection with 1 readiness (evap). I have the same code and issue with my custom UNI tune. It's not an issue and it's related to the evap canister and or can be solved with a resistor but not by plugging in the maf.

I have run my car mafless for about a year and a half... uni tune.... It was not written to be mafless, but it works fine.

My evap readiness would never pass... I plug in my maf in the process of getting ready for emissions...and what do you know --- EVAP passes. hmmmmm

I would run MAFLESS, but I was just letting you know that the EVAP will more than likely pass if you plug in the MAF...


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[bassed]

I have run my car mafless for about a year and a half... uni tune.... It was not written to be mafless, but it works fine.

My evap readiness would never pass... I plug in my maf in the process of getting ready for emissions...and what do you know --- EVAP passes. hmmmmm

I would run MAFLESS, but I was just letting you know that the EVAP will more than likely pass if you plug in the MAF...


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I've been running mafless for a year and three months. The old tune was not mafless, but I ran sans maf. The custom UNI tune is maf delete, but I still have the evap issue. I had it before either way as well. I wonder if running a resistor will get rid of it, there is a way to write it out though UNI just doesn't do it.

[GetBoosted84]

When I spoke with Uni they said it was something they could and would code out for me. I just figured they forgot.

[GetBoosted84]

Here are my timing logs since maxspeed requested them:





And my failing readiness check:

[maxspeed]

you should talk to k0mpressed about that.

[Poopie]

your timing correction is so much better

[GetBoosted84]

you should talk to k0mpressed about that.

Yeah I was thinking that I could talk to k0mpressed about it but really Uni should fix it considering I just bought the tune through them so I am going to work with them first and give them a chance to fix it.

EDIT: Lavi @ Uni just emailed me back. He gave me a suggestion to try out so I'm going to try that tomorrow when I change my thermostat and see if it works.

your timing correction is so much better

Dude you're telling me. It was at 10-12 degrees before!

[GetBoosted84]

Lavi suggested that I disconnect the EVAP sensor and the issue will go away. Unfortunately that was incorrect. Unplugging that sensor just gave me a EVAP open circuit CEL and the readiness check was still failing.

After that I tried Don Supreme's suggestion and I reconnected the MAF. The readiness check didn't go away immediately but I am going to leave it connected for a little while to see if it helps out.

In the meantime, I e-mailed Lavi to let him know the situation and he said he is going to look into it.

[bassed]

Chris you making much of nothing, you will pass with the readiness as gown in your image. It's not performance related, it's pretty moot IMO. Just shrug it off for now of talk to Mike Z not Levi.

[GetBoosted84]

I know it's not performance related but since I paid a good bit for it and requested to have EVAP coded out I am a little annoyed since I was planning to remove all that crap from the engine bay.

[bassed]

I know it's not performance related but since I paid a good bit for it and requested to have EVAP coded out I am a little annoyed since I was planning to remove all that crap from the engine bay.

This is something that you should be dealing with them directly about and no one else then. No one here can help, someone mentioned having Evil Ian write it out for you when you're running UNI. Basically deal with them directly on this, my .02.

[GetBoosted84]

Yeah that's what I'm doing currently with Lavi. Figured I could use a few suggestions though from the community.

Don Supreme... your suggestion worked though! Plugging the MAF in cleared out the EVAP readiness failure. I'm going to get back with Uni to let them know so that way they can further help me out.