September 30, 2020, 05:29:35 PM

Author Topic: Blake's 1965 Mustang Project  (Read 246748 times)

Offline digitalsolo

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Re: Blake's 1965 Mustang Project
« Reply #2460 on: September 23, 2020, 09:38:27 AM »
Oh, yeah, whoops.



There's your problem, caller.

So when I had the old pump setup in this tank, I had cut down the barbs to lower the strain on the hose/pump barbs.   That worked fine.   The brushless pump, however, when I installed it, was off axis slightly and put strain on that hose.   That, with the shorter barb caused it to pop loose.

I redid the mounting in the tank so that it's dead in line and can't easily come loose now, but I also went ahead and ordered a fresh barb to be double sure.

So, my FPR was innocent.   It was a weird failure mode.  Oh well, got a new shiny one coming anyway, hah.   
Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...  project car
2016 BMW 428i xDrive Gran Coupe - Completely stock...ish

Offline stubbyfoil

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Re: Blake's 1965 Mustang Project
« Reply #2461 on: September 23, 2020, 10:45:08 AM »
Good find! I like to use the "Click type" hose clamps as they're less likely to damage the outside of the fuel hose. Especially helpful when submerged. This build is so sick! keep it up!
::SOLD::
1992 RHD FD
Turbo LS2
700+WHP
10.6 @ 136mph.
:drive: :secret:

Offline wickedrx7

Re: Blake's 1965 Mustang Project
« Reply #2462 on: September 23, 2020, 11:34:10 AM »
Yikes, good thing the new computers are so good and it protected your motor. 

1993 Touring, 2012 L99, T-56, Ronnin 8.8, Ohlins, Speedhut, Samberg and lots of custom parts
Build Thread - http://www.norotors.com/index.php?topic=19354.0
Pictures - www.flikr.com/wickedrx7

Offline digitalsolo

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Re: Blake's 1965 Mustang Project
« Reply #2463 on: September 23, 2020, 12:27:50 PM »
Yeah, I'm fairly sure the motor is fine, but glad to have the Haltech for sure!  It didn't go "OMG, you melted your pistons" lean, but it definitely leaner than I'd like it to!

Fun fact, when I turned the pump back on at 50% duty cycle after fixing that hose, my FPR was at 136 PSI, LOL.    That was cranked ALL the way down from testing, but, still, damn, that pump moves some head pressure if needed!
Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...  project car
2016 BMW 428i xDrive Gran Coupe - Completely stock...ish

Offline digitalsolo

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Re: Blake's 1965 Mustang Project
« Reply #2464 on: September 24, 2020, 11:34:01 AM »
Okay, so did a quick pull last night and it spammed DBW errors again.    Reached out to Haltech and they stated it's likely a DBW TB problem.    I had a DBW throttle issue once with the AEM also, so...  I guess we'll see if maybe my TB was just bum?   I'll go to a 2018+ TB while I'm at it I guess.    Dangit.
Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...  project car
2016 BMW 428i xDrive Gran Coupe - Completely stock...ish

Offline kinger

Re: Blake's 1965 Mustang Project
« Reply #2465 on: September 25, 2020, 02:47:36 PM »
Yikes, I feel I have a similar issue with my NW 90MM TB.  I like how you grab on to it then go a different direction, I am going to pee away 2 years of tuning before I give up LOL
93 Touring, 6.3L, T56 Magnum, Mamo RPS BC2 clutch, FAST 90, NW 90TB TB, 8.8, samberg everything, AC, PS, TC, Cruise, LED Tails, HID head lights

Offline digitalsolo

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Re: Blake's 1965 Mustang Project
« Reply #2466 on: September 26, 2020, 09:03:44 AM »
I did another pull last night with better logging;   Iím just not sold itís a DBW error.   I had zero DBW mismatch in commanded vs actual until AFTER the ECU shut it off.   So the errors and stuff seemed to happen AFTER the ECU disabled the throttle.

What I did have was a fuel injector duty cycle greater than 90% error.   That error is crap, my duty cycle never passed 60%.    Looks like Haltech has some background with that happening and had discussions about disabling that DTC.

I donít think THAT is the issue either.   At least not directly.    I have a new theory:   Boost cut.     My logging speed for boost is somewhat slow and I noticed that itís 13.5 on the way DOWN, not peak.    Boost cut was like 16.   I bumped it up slightly and Iíll bump down duty cycle on the boost controller.

I did the pull through two gears and WOT in 2nd I short shifted to 3rd and only hit about 12 psi.   No issues.  3rd was fine until ~15 psi then it drove off a cliff.     Anyway, thatís my theory now.   Iím going to hit Haltech up about it also, but it makes sense at least!
Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...  project car
2016 BMW 428i xDrive Gran Coupe - Completely stock...ish

Offline Exidous

Re: Blake's 1965 Mustang Project
« Reply #2467 on: September 26, 2020, 10:39:10 AM »
I saw something similar on an e1500 while running a still rotary FD. There seemed to be a little lag in what the log was showing and what the ECU was seeing. Ended up manually verifying boost level with an old mechanical guage.
The haltechs are super sensitive to what you've set as safeties. It almost seems like it's predictive based on the acceleration of the reading. If your have it set to 15psi and it sees you get there rapidly it'll cut off before you even get over 15. Just a theory though.
94 BB Sleeved gen IV LS7, MS3ProU with TC, RONIN 8.8 and LT's with custom 3.5"single to VAREX muffler.

Offline digitalsolo

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Re: Blake's 1965 Mustang Project
« Reply #2468 on: September 28, 2020, 09:43:55 AM »
I saw something similar on an e1500 while running a still rotary FD. There seemed to be a little lag in what the log was showing and what the ECU was seeing. Ended up manually verifying boost level with an old mechanical guage.
The haltechs are super sensitive to what you've set as safeties. It almost seems like it's predictive based on the acceleration of the reading. If your have it set to 15psi and it sees you get there rapidly it'll cut off before you even get over 15. Just a theory though.

I'm somewhere in the mid 90s percent confident that's the issue.   I looked back at old logs and this didn't happen a single time until I cranked the boost duty cycle up.   I don't believe in coindicence and I know my DBW works FINE at ~12 PSI, I really don't think that at 13.5 psi (recorded) it suddenly fails.   Also, as noted, the logs say it's fine too.

Unfortunately I've been too busy on other stuff to test it, but I will soon.   :)
Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...  project car
2016 BMW 428i xDrive Gran Coupe - Completely stock...ish