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Engine Turbo 5.0 Mustang bad misfire at WOT

  • Thread starter Thread starter AwxyMoron
  • Start date Start date Apr 3, 2021
  • Tags Tags
    5.0 misfire backfire engine turbo wot low power
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AwxyMoron

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Apr 3, 2021
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Apr 6, 2021
#41
  • Apr 6, 2021
  • #41
Noobz347 said:
Yeah... and I'm going to ping @a91what because you've accumulated enough combo that the A9L is no longer the best way to tune it anymore IMO. If you're going to put money into a wideband, you should put money into one that is future compatible with a good tuning system.
Click to expand...

Noobz347 said:
You should have 10,000 ohms or greater on the following:

MAF SIG and MAF RTN
MAF SIG and ground
Click to expand...
So it seems the MAF is bad then... considering it would be $300+ for another and then about $160 for a wideband, what are the thoughts on just picking up a Holly Terminator X which comes with a wideband and then ditching the MAF and MSD ignition?
 

Noobz347

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#42
  • Apr 6, 2021
  • #42
AwxyMoron said:
So it seems the MAF is bad then... considering it would be $300+ for another and then about $160 for a wideband, what are the thoughts on just picking up a Holly Terminator X which comes with a wideband and then ditching the MAF and MSD ignition?
Click to expand...
@a91what question right there.
 

a91what

SendMeUrDataLog
10 Year Member
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Apr 6, 2021
#43
  • Apr 6, 2021
  • #43
AwxyMoron said:
So it seems the MAF is bad then... considering it would be $300+ for another and then about $160 for a wideband, what are the thoughts on just picking up a Holly Terminator X which comes with a wideband and then ditching the MAF and MSD ignition?
Click to expand...
The terminator X is a good choice if you want a basic installation and a new harness.

I personally use MegaSquirt, I tune holley because its popular.

I am biased and prefer to support American companies.
 
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AwxyMoron

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Apr 3, 2021
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Apr 7, 2021
#44
  • Apr 7, 2021
  • #44
a91what said:
The terminator X is a good choice if you want a basic installation and a new harness.

I personally use MegaSquirt, I tune holley because its popular.

I am biased and prefer to support American companies.
Click to expand...
Thanks for all the help guys! I'm gonna go ahead with the Holley Terminator, it checks all the boxes for me, the new harness is a big plus as well.
 

marcelo

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Feb 25, 2018
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Apr 25, 2021
#45
  • Apr 25, 2021
  • #45
I got my Terminator X Box Thursday and installed evererthing .. Saturday was the 1. Fire Up ....surprise surprise .... the tune is way off and has to be changed..Cruising timing is set at 42 degrees and wot also way over 30 ... but when tuned a little with the Handheld and Static timing set correctly ... damm that works verry well ... Idle is stable like a rock ... never got that so perfect with the Megasquirt .... have to drive the car now and see how it works .. but first impression is not bad ....www.youtube.com/watch?v=1PprZ6svse4
 
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AwxyMoron

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Apr 3, 2021
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Apr 27, 2021
#46
  • Apr 27, 2021
  • #46
marcelo said:
I got my Terminator X Box Thursday and installed evererthing .. Saturday was the 1. Fire Up ....surprise surprise .... the tune is way off and has to be changed..Cruising timing is set at 42 degrees and wot also way over 30 ... but when tuned a little with the Handheld and Static timing set correctly ... damm that works verry well ... Idle is stable like a rock ... never got that so perfect with the Megasquirt .... have to drive the car now and see how it works .. but first impression is not bad ....www.youtube.com/watch?v=1PprZ6svse4
Click to expand...
Yeah I got it installed along with a dual sync distributor a couple weeks ago, the car literally runs like butter its crazy how much the updated electronics are helping
 
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Noobz347

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#47
  • Apr 27, 2021
  • #47
 
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AwxyMoron

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Apr 28, 2021
#48
  • Apr 28, 2021
  • #48
Noobz347 said:
Click to expand...
 
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AwxyMoron

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Apr 3, 2021
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Apr 28, 2021
#49
  • Apr 28, 2021
  • #49
Noobz347 said:
Click to expand...

Little beauty shot since I got it together too
 

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marcelo

Active Member
Feb 25, 2018
215
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Quepos, Costa Rica, Central America
May 3, 2021
#50
  • May 3, 2021
  • #50
loaded some own tune and went for a ride today ..1. time with TX .. this is really surprising how this thing works .. car runs perfect ..almost too good to be true ..
have to check the learntable tomorrow to see how far off it was ..but damm..this TX works perfect...
 
A

AwxyMoron

Member
Apr 3, 2021
34
9
18
Ohio
May 5, 2021
#51
  • May 5, 2021
  • #51
marcelo said:
loaded some own tune and went for a ride today ..1. time with TX .. this is really surprising how this thing works .. car runs perfect ..almost too good to be true ..
have to check the learntable tomorrow to see how far off it was ..but damm..this TX works perfect...
Click to expand...
I had the same experience once I threw in a decent turbo fuel and timing table, added that dual sync distributor and it literally drives so smooth its unreal. Only problems I have been having is getting it stop surging at idle every once in a while
 

a91what

SendMeUrDataLog
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#52
  • May 5, 2021
  • #52
Check you fuel trims, make sure its actually tuned and not the ego correction doing all the work.
 
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