Fueling upgrade in the works? - Tork Motorsports

[DaBears4Lyfe]

John Bushbaum just posted a video regarding a potential fuel pump upgrade! Looks like he will be working on a new fuel pump to continue tuning with. Should be a great new mod for us Stinger owners!

 

[Angel]

Seems legit, we just need to wait and see what is in the works.....but agree i watched the video and what he is saying makes sense. I think once he install meth on his car, the car is going to be fast...I suspect he could get an 11.5-11.7 pass easy in the 1/4 mile once he addresses his fuel issues.

 

[Terry@BMS]

It's a fairly standard low pressure system, similar to the BMW M3/M4 with the exception that it only has one venturi valve. Normally there is a second one to keep the bucket itself full. The 4 wire pumps are difficult to upgrade so we generally offer an add on pump controlled by the JB4.

But before anything what really needs to be done is confirming the low fuel pressure is dropping under higher power levels where high pressure is dropping. Which means logging the low fuel pressure signal going in to the EKP. It's on our to-do list to figure out.

From what I can tell the high and low pressure fuel systems are not a huge issue on the stock turbos. With larger turbos work will be needed though.

 

[Kazz]

I sure would like to understand the max threshold of the stock fuel pump!

 

[Tonkabob]

New Tork video on this topic.

 

[Angel]

Everyone big news from Tork ...looks like there getting somewhere.....Good job Tork/John and I am not being sarcastic....great job keep us updated in here man......

 

[brancky3]

Tl;dr - Tork says the check valve the fuel pump uses is probably not needed because there is another regulator that should take care of the function, although he doesn't know yet if the regulator has a check valve built in. Also, the check valve only allows ~3.6mm equivalent hose size in flow so he will be opening the holes in the existing check valve to see if it changes the fuel aspects. Existing hose connections on the pump assembly are ~4.8mm in diameter.

 

[Angel]

Tl;dr - Tork says the check valve the fuel pump uses is not needed because there is another regulator that should take care of the function, although he doesn't know if the regulator has a check valve built in. Also, the check valve only allows ~3.6mm equivalent hose size in flow so he will be opening the holes in the existing check valve to see if it changes the fuel aspects. Existing hose connections on the pump assembly are ~4.8mm in diameter.

Don’t understand what your trying to say here .... you just literally repeated what John said lol .... John didnt say the check valve is not needed .... he said it is possible it won’t be needed if the regulator has another one ... he stated he will be looking into that .... I took it as he will opening up the holes and see if it provides his car with more flow and help his fuel issues .... if it does help his fuel issues without causing other issues then he is making improvement, or there is the possibility that what he’s doing won’t help and cause other issues but I guess we won’t know into he’s done testing .... either way he is putting in the work and being the lab rat to put it to the test ... let’s wait and see what he comes back with ... maybe it’s good news, maybe it’s bad news ....

 

[brancky3]

Don’t understand what your trying to say here .... you just literally repeated what John said lol ....

That's the whole point of a Tl;dr post. Many people aren't going to watch an 11 minute video when you can explain the restriction in 2 sentences (which is what I did). It's great info and I was just trying to make it easier for people to get the information faster.

For someone to disagree with my post? lmao

 

[DaBears4Lyfe]

That's the whole point of a Tl;dr post. Many people aren't going to watch an 11 minute video when you can explain the restriction in 2 sentences (which is what I did). It's great info and I was just trying to make it easier for people to get the information faster.

For someone to disagree with my post? lmao

Yes I did.

Because of this:

"Tork says the check valve the fuel pump uses is not needed because there is another regulator that should take care of the function although he doesn't know if the regulator has a check valve built in" He didnt say it was not needed. He said it shouldnt be needed if there is a check valve in the regulator but he has to tear that apart to check. Not isnt needed but doesn't know if there is a check valve in the regulator. The way you worded (purposely im sure) is to make it seem like he is saying you dont need it but he doesn't know if there is even a check valve in the regulator yet.

Also, the videos are designed to help people understand the function of the fuel pump and its components. To educate the community.

 

[brancky3]

No, I didn't purposely word it to make it sound bad. I updated it to include the words 'probably' and 'yet'. Sorry to offend you guys by saving people 10 minutes.. I did purposefully leave out the part where he's trashing other vendors though since it's 100% irrelevant.

 

[Terry@BMS]

Admittedly I didn't watch the video, but it sounds like narrowest point within the fuel bucket is 3.6mm based on the replies here? Depending on the fuel pressure and how long fuel has to travel along the narrowest point it may or may not be significant.

I still think the first step towards evaluating the fuel system is to get low pressure logging active so we can confirm the higher power high fuel pressure drops we see are preceded by a low fuel pressure drop. And better evaluate low fuel pressure overall even in situations where high pressure isn't cratering.

 

[DaBears4Lyfe]

Admittedly I didn't watch the video, but it sounds like narrowest point within the fuel bucket is 3.6mm based on the replies here? Depending on the fuel pressure and how long fuel has to travel along the narrowest point it may or may not be significant.

I still think the first step towards evaluating the fuel system is to get low pressure logging active so we can confirm the higher power high fuel pressure drops we see are preceded by a low fuel pressure drop. And better evaluate low fuel pressure overall even in situations where high pressure isn't cratering.

How soon do you think you can get the logging for that? Or would the JB4 not be able to do so? It does make sense why WMI is highly effective in our cars at high Boost(not saying its not in others).

 

[Angel]

That's the whole point of a Tl;dr post. Many people aren't going to watch an 11 minute video when you can explain the restriction in 2 sentences (which is what I did). It's great info and I was just trying to make it easier for people to get the information faster.

For someone to disagree with my post? lmao

My bad I didn't see the coding in the corner "Tl;dr", You got very tactical on us and I lost you.

 

[Tonkabob]

And Lap3 says there are no fuel issues at all, while all other tuners agree there are fuel limitations. Hmmmm.

Also in comments Tork said removing the check valve entirely may cause long cranking while starting. I say pull out the check valve and block of the cross over fuel port and test. Then we know we have a low pressure fuel pump issue for sure.

 

[Terry@BMS]

Been tied up with other projects on both the Stinger and others so haven't gotten to it yet.

WMI offers several benefits. Increased fuel volume, increased octane, and lowered inlet temps. With EGT reduction a bonus. Increased fuel volume isn't adding any power but does let you run a stronger E85 mixture which in turn adds more octane to the mix. Then again with WMI octane normally isn't an issue.

Fuel system upgrades on this platform in my opinion won't be much of a factor until you run larger turbos, much stronger E85 mixtures, etc.

 

[Angel]

No, I didn't purposely word it to make it sound bad. I updated it to include the words 'probably' and 'yet'. Sorry to offend you guys by saving people 10 minutes.. I did purposefully leave out the part where he's trashing other vendors though since it's 100% irrelevant.

No apologies needed Sir and no offense was taken, you are a good man ......Just put a disclaimer when you are going tactical on us at the bottom of your post.....

 

[DaBears4Lyfe]

And Lap3 says there are no fuel issues at all, while all other tuners agree there are fuel limitations. Hmmmm.

Im assuming they never tried to run without the meth lol or that will be apart of the ECU/New Turbo Package thats going to be as expensive as the car im sure .

 

[Angel]

And Lap3 says there are no fuel issues at all, while all other tuners agree there are fuel limitations. Hmmmm.

Maybe Lap 3 is compensating via tunning or something.....I am sure they know what there doing....They probably know a lot and are saying/sharing very little......

 

[DaBears4Lyfe]

Been tried up with other projects on both the Stinger and others so haven't gotten to it yet.

WMI offers several benefits. Increased fuel volume, increased octane, and lowered inlet temps. With EGT reduction a bonus. Increased fuel volume isn't adding any power but does let you run a stronger E85 mixture which in turn adds more octane to the mix. Then again with WMI octane normally isn't an issue.

Fuel system upgrades on this platform in my opinion won't be much of a factor until you run larger turbos, much stronger E85 mixtures, etc.

How high of boost are you able to push the car with without meth? I think most are reporting 18PSI? I know some have hit 20+ but that was with meth correct?