#21  
Old 07-02-2020, 08:07 PM
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Charlie, have you you run the engine to see if it made any difference to your hot restart issue? And good work on finding the leaks

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  #22  
Old 07-03-2020, 05:05 AM
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Not yet Scott. Ill be doing that in a couple of hours. I wanted everything to dry before i did. And thanks. Im hoping that with all these findings some good will come from it. Seems like everytime i find something an think its going to matter it just dosen't But i think im running out of things to find.lol. So maybe thats a good thing ... haha

One thing that happened is, when i put the throttle body back together i had to recalirate the TPS.. But i couldnt figure out the way i did it initially so i set it on auto.. Have to do my home work on this i guess..

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Old 07-03-2020, 07:12 AM
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I did the leak test this morning and now those 3 joints are at 100% leak free. I hope this permatex holds now. But so far i fixed 5 intake leaks which 2 were really bad. And 4 exhaust leaks. Just waiting for the test . Im kinda scard to try it at this point. Feels good to feel like i got it now. This ride could be just another let down...

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Old 07-03-2020, 10:05 AM
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Charlie, section 6.5.1 on page 35 of the manual covers the manual entry tps calibration.

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Old 07-03-2020, 11:23 AM
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Thanks Scott..

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Old 07-08-2020, 10:04 PM
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Any updates Charlie?

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Old 07-09-2020, 07:22 AM
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Hey Scott,

Lol Just problem after problem haha

I fixed as much as i can find. Theres something off . I just cant figure it out.

I did find something wrong with the BOV . Should have the new diaphragm tomorrow.

Still have that dead spot when peddling the car. Its so annoying.. Other then that the car runs like an ape. Did find out that this time around ( meaning this new build) theres 20more psi of cranking pressure. I guess the runners being smaller picked the air speed up allowing more air to enter the chamber? Idk. But i used to have 170 now its 190 . I guess thats explains why it feels faster per pound of boost.

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Last edited by charlie66; 07-09-2020 at 07:30 AM.
  #28  
Old 07-09-2020, 07:45 AM
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Can you get a datalog of the dead spot? Maybe you can share that where you can get more eyes on it. There's some folks here that have experience with turbos(not me) that I bet would be able to help.
Edited to add: After you get the BOV right. That sounds like a likely candidate to cause an issue in a pedal situation.

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Old 07-09-2020, 07:50 AM
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I'd check out the fuel side of it?
Could be getting too lean and can't recover fast enough?
Injectors bad?

Not an EFI guy but possibly the programming isn't reacting fast enough to inject fuel when needed? (after the pedaling then hammering it)


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  #30  
Old 07-09-2020, 08:42 AM
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Quote:
Originally Posted by Scott65 View Post
Can you get a datalog of the dead spot? Maybe you can share that where you can get more eyes on it. There's some folks here that have experience with turbos(not me) that I bet would be able to help.
Edited to add: After you get the BOV right. That sounds like a likely candidate to cause an issue in a pedal situation.
I do have a data log . But i have no clue how to post it..

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Old 07-09-2020, 09:02 AM
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Quote:
Originally Posted by johnta1 View Post
I'd check out the fuel side of it?
Could be getting too lean and can't recover fast enough?
Injectors bad?

Not an EFI guy but possibly the programming isn't reacting fast enough to inject fuel when needed? (after the pedaling then hammering it)

Im running very rich before the peddle at 0.072 Lambda (my target is 0.080) On the drop (meaning off the throttle it goes 0.068 and coming back into the throttle im richer going as low as 0.063 for 1 frame then leveling out to 0.071 in 1.80 seconds. So thats real rich. 0.70 on the AF scale is 10.29. lol I went out yesterday to try an clean that up but had other issues . The heater core decided to spew hot water all over my feet. So im fixing this today and hopefully ill be back on track to lean this thing out to my target later on ..

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Old 07-09-2020, 10:10 AM
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You mean 0.72 Lambda? 1.00 is stochastic. Point zero xx is very, very rich.
Possibly injectors leaking fuel?

That long of a delay suggests to me something is wrong somewhere.
(not necessarily the turbo piping)



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  #33  
Old 07-09-2020, 10:19 AM
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Quote:
Originally Posted by johnta1 View Post
You mean 0.72 Lambda? 1.00 is stochastic. Point zero xx is very, very rich.
Possibly injectors leaking fuel?

That long of a delay suggests to me something is wrong somewhere.
(not necessarily the turbo piping)


Yes 0.70 . I wrote it wrong..

Yeah i found that out. But i did find a bunch of leaks on hot and cold sides . Im happy about that.

Injectors were checked. Guy said they flowed better then what they are..

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Old 07-09-2020, 10:21 AM
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Hey john, how do you post those little emojis? I could never figure that out..

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Old 07-09-2020, 10:51 AM
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Charlie, I can offer some general advice. You likely have 3 different areas of the fueling to adjust. The one where you're in the throttle will be a different load area than where you're out of it, and the momentary really rich area is acceleration enrichment. Don't give too much credibility to the AE, until the other 2 areas are where you decide you like them. Ive found it helpful to make back to back tests in a specific range, moving the fueling 2-3 percent to help establish an approximate ratio of how the increase/decrease translates to afr, or in your case lambda.
As for the fueling response time deal, it works in milliseconds, as long as the rail is pressurized properly thats a non factor.

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  #36  
Old 07-09-2020, 02:16 PM
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Well, from my understanding the Target fuel table is the most important table. That one needs to be good. Then you make the adjustments in the VE table . There is a enrichment area not to familiar with that though..

Just so you know, this is a new problem. It has never been this way before. I got this fuel injection back in 2012. So i feel something has happen but dont know what..

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Old 07-09-2020, 02:42 PM
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Quote:
Originally Posted by johnta1 View Post
You mean 0.72 Lambda? 1.00 is stochastic. Point zero xx is very, very rich.
Possibly injectors leaking fuel?

That long of a delay suggests to me something is wrong somewhere.
(not necessarily the turbo piping)



stochastic ???? Stoichiometric Ratio

The stoichiometric ratio is the exact ratio between air and flammable gas or vapor at which complete combustion takes place.

Tom V.

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  #38  
Old 07-09-2020, 03:06 PM
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Quote:
stochastic ???? Stoichiometric Ratio
Well, it was random thought processing.




Quote:
Hey john, how do you post those little emojis? I could never figure that out..
I use a laptop, not sure what it looks like on a phone.
I use the Post Reply and not the Quick Reply.

To the right of the reply area is a panel of icons.




Many to pick from.


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Last edited by johnta1; 07-09-2020 at 03:12 PM.
  #39  
Old 07-09-2020, 03:40 PM
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I can live with that explanation Hope southern life is agreeing with you, John.

TV

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  #40  
Old 07-09-2020, 04:21 PM
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Quote:
Originally Posted by charlie66 View Post
I do have a BOV . I was thinking about taking it off and looking at it but not sure how to tell if its malfunctioning.It does seal when i test it an spray it with water.

I did a cranking cyl psi test yesterday and had 190 psi in all cylinders. Normally it has 170. I guess the new head is making more pressure. That explains why it feels faster per pound of boost i guess. I guess the smaller runners made this happen. Ill have to see if that changed the vacuum. Maybe when on and off the throttle the bov is out of sync like you said..
Thanks Paul..
So what did old head flow compared to new head.

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