[warcraftjs]

So yesterday I went out with my son to pick him up a New RC car. And on the way back a Dodge Challenger SRT pulled up behind me and we started to "play around". (Yes, yes I know he can kick my cars butt) But we where having fun on the road and the road had nice curves.

So we finally came up to a stop light, exchanged compliments. (He liked my car, I like his car that sort of thing.)

So as the light was about to turn green, I did the launch control and the light turned green we took off. (Wouldn't you know it I launched first), But here is the problem......

I got up to about 90-100 and my car kept like almost hesitating. I let off then smashed the gas and a giant dark cloud came out the back of my car and it took off again.
No error codes, engine temp was around 240-250 after I finally backed off the car ran perfect no problems. Got onto another highway and ran it a little harder again and no problems.

My question is is there something I should be looking for? Upgrading? Adjusting? Could it have been be blowing the carbon out ?

Here is what my 435xi msport has:
Dinan Stage 3
Dinan Intercooler
Dinan CAI
Dinan Exhaust
Evolution Racewerks Charge Pipes
Evolution Racewerks Turbo to Intercooler Charge Pipe

Just changed the spark plugs, I'm at 58k miles.

Sorry for the long story.

[thejeremyman9]

Can you better describe "like almost hesitating"? Like a shudder/misfire?

What you saw was probably just the initial surge of fuel and corresponding smoke, likely combined with some unburned fuel from when the car was misfiring. My best guess given you have no datalogs or anything else to go on.

Why it did it in the first place is anyone's guess. Maybe try to recreate the same situation again (leading up to and including the launch control to 100 mph) to see if its repeatable. If not, it might have been a fluke...

[lens]

Originally Posted by warcraftjs

So yesterday I went out with my son to pick him up a New RC car. And on the way back a Dodge Challenger SRT pulled up behind me and we started to "play around". (Yes, yes I know he can kick my cars butt) But we where having fun on the road and the road had nice curves.

So we finally came up to a stop light, exchanged compliments. (He liked my car, I like his car that sort of thing.)

So as the light was about to turn green, I did the launch control and the light turned green we took off. (Wouldn't you know it I launched first), But here is the problem......

I got up to about 90-100 and my car kept like almost hesitating. I let off then smashed the gas and a giant dark cloud came out the back of my car and it took off again.
No error codes, engine temp was around 240-250 after I finally backed off the car ran perfect no problems. Got onto another highway and ran it a little harder again and no problems.

My question is is there something I should be looking for? Upgrading? Adjusting? Could it have been be blowing the carbon out ?

Here is what my 435xi msport has:
Dinan Stage 3
Dinan Intercooler
Dinan CAI
Dinan Exhaust
Evolution Racewerks Charge Pipes
Evolution Racewerks Turbo to Intercooler Charge Pipe

Just changed the spark plugs, I'm at 58k miles.

Sorry for the long story.

Fuel pump crashed, if you see and hear and feel like the car is two-step ping or hesitating, it's due to the HPFP crashing either due to octane, or over boosting.

[warcraftjs]

Originally Posted by thejeremyman9

Can you better describe "like almost hesitating"? Like a shudder/misfire?

What you saw was probably just the initial surge of fuel and corresponding smoke, likely combined with some unburned fuel from when the car was misfiring. My best guess given you have no datalogs or anything else to go on.

Why it did it in the first place is anyone's guess. Maybe try to recreate the same situation again (leading up to and including the launch control to 100 mph) to see if its repeatable. If not, it might have been a fluke...

Originally Posted by chaungo

Fuel pump crashed, if you see and hear and feel like the car is two-step ping or hesitating, it's due to the HPFP crashing either due to octane, or over boosting.

Ya I don't have a datalogs. (not sure how to get that) It was kinds like chaungo said kinda a two-stepping but I only got it up around 100 mph then after 100 it was fine. I just drove the car around and its was running great. Tho I didn't do any bashing. I will have to find a good road to try the Launch to 100 again to see if I can repeat it.

But you all think I could use a fuel pump upgrade?

[lens]

Originally Posted by warcraftjs

Ya I don't have a datalogs. (not sure how to get that) It was kinds like chaungo said kinda a two-stepping but I only got it up around 100 mph then after 100 it was fine. I just drove the car around and its was running great. Tho I didn't do any bashing. I will have to find a good road to try the Launch to 100 again to see if I can repeat it.

But you all think I could use a fuel pump upgrade?

It would help, but it's mostly fixed with better octane, the reason why it does it is because your timing is way off due to fuel quality and octane, and it's sending in more fuel to offset it, but HPFP cannot keep up with demand. You can get a HPFP upgrade, but it won't fix your timings.

Try getting better fuel first, and if it keeps crashing, then upgrade HPFP.

[thejeremyman9]

Originally Posted by chaungo

It would help, but it's mostly fixed with better octane, the reason why it does it is because your timing is way off due to fuel quality and octane, and it's sending in more fuel to offset it, but HPFP cannot keep up with demand. You can get a HPFP upgrade, but it won't fix your timings.

Try getting better fuel first, and if it keeps crashing, then upgrade HPFP.

I think we really need to see a datalog before we make a guess about timing and fuel pump crash. If OP doesnt have MHD/BM3 since he went the dinan route, he might need to just get a generic OBD2 device to connect to his phone and use something like torque to do datalogging. But i am not sure how much torque will be able to see compared to MHD/BM3. I dont think dinan has any logging?

Also, OP - what fuel are you running? I think IL has 93, no?

[lens]

Originally Posted by thejeremyman9

I think we really need to see a datalog before we make a guess about timing and fuel pump crash. If OP doesnt have MHD/BM3 since he went the dinan route, he might need to just get a generic OBD2 device to connect to his phone and use something like torque to do datalogging. But i am not sure how much torque will be able to see compared to MHD/BM3. I dont think dinan has any logging?

Also, OP - what fuel are you running? I think IL has 93, no?

Oh, I'm pretty sure it's the fuel pump, I had the same exact thing he did, it runs richer to try to offset the octane which in turns crashes the HPFP due to fuel demand, I'll attach a log as a example.

https://www.bootmod3.net/log?id=5ebf...729b721306b5e7


Ignore the trash timing lol I was running a bottle of fuel system cleaner from redline.

[warcraftjs]

Originally Posted by thejeremyman9

I think we really need to see a datalog before we make a guess about timing and fuel pump crash. If OP doesnt have MHD/BM3 since he went the dinan route, he might need to just get a generic OBD2 device to connect to his phone and use something like torque to do datalogging. But i am not sure how much torque will be able to see compared to MHD/BM3. I dont think dinan has any logging?

Also, OP - what fuel are you running? I think IL has 93, no?

I do have the Torque app. I will try to get what I can from that.

Yes we have 93 and that's what I always fill up with. Normally from Speedway.

Originally Posted by chaungo

Oh, I'm pretty sure it's the fuel pump, I had the same exact thing he did, it runs richer to try to offset the octane which in turns crashes the HPFP due to fuel demand, I'll attach a log as a example.

https://www.bootmod3.net/log?id=5ebf...729b721306b5e7


Ignore the trash timing lol I was running a bottle of fuel system cleaner from redline.

I'm going to start to look in to the upgraded fuel pump from Dinan. Unless you all have a better (maybe cost efficient) option.

[thejeremyman9]

Originally Posted by warcraftjs

I do have the Torque app. I will try to get what I can from that.

Yes we have 93 and that's what I always fill up with. Normally from Speedway.



I'm going to start to look in to the upgraded fuel pump from Dinan. Unless you all have a better (maybe cost efficient) option.

Key things per our discussion above are HPFP rail pressure and corresponding target. And ign timing for all 6 cylinders.

Also, he is not talking about LPFP. You definitely don't need that. He is talking about HPFP and to my knowledge dinan does not offer one.

[warcraftjs]

Originally Posted by thejeremyman9

Key things per our discussion above are HPFP rail pressure and corresponding target. And ign timing for all 6 cylinders.

Also, he is not talking about LPFP. You definitely don't need that. He is talking about HPFP and to my knowledge dinan does not offer one.

Ahh. Got it. Ya I started looking for how to do it. Doesn't seam that difficult to replace. But I may have it done for me.

[thejeremyman9]

Originally Posted by warcraftjs

Ahh. Got it. Ya I started looking for how to do it. Doesn't seam that difficult to replace. But I may have it done for me.

Ok. I still wouldnt throw parts at the car until you confirm that's what the issue was, and confirm the issue is repeatable and not a fluke for some other reason.

[warcraftjs]

Originally Posted by thejeremyman9

Ok. I still wouldnt throw parts at the car until you confirm that's what the issue was, and confirm the issue is repeatable and not a fluke for some other reason.

I'm waiting for this weekend to have some good runs. And have Torque app running.

[xnick101]

Originally Posted by warcraftjs

I'm waiting for this weekend to have some good runs. And have Torque app running.

Why are you not using your tuning software to log?

[warcraftjs]

To be honest I didn't even know I could run any tuning software to log, with my Dinan box.

[thejeremyman9]

Originally Posted by xnick101

Why are you not using your tuning software to log?

Does the dinan even have any logging capabilities? He doesnt have BM3, MHD, or JB4.

[xnick101]

Originally Posted by thejeremyman9

Does the dinan even have any logging capabilities? He doesnt have BM3, MHD, or JB4.

Whoops. I thought Dinan stage 3 was a package. Didn't realize that was the tune

Carry on OP.

[ronanz]

Also, unless you plan on going bm3, MHD or Custom Tune, Dorch, XDI and Spool are off the table. Your only other HPFP option will be B58 HPFP.

.

[warcraftjs]

Originally Posted by thejeremyman9

Does the dinan even have any logging capabilities? He doesnt have BM3, MHD, or JB4.

Not that I know of. There is nothing in the APP for the Dinan only the ablity to change from Stock to S1, S2, and S3 tunes.

Originally Posted by xnick101

Whoops. I thought Dinan stage 3 was a package. Didn't realize that was the tune

Carry on OP.

No prob I wasn't sure if you knew of a way.

Can I run any of the tunes (BM3, MHD) along with my Dinan?

[warcraftjs]

Originally Posted by ronanz

Also, unless you plan on going bm3, MHD or Custom Tune, Dorch, XDI and Spool are off the table. Your only other HPFP option will be B58 HPFP.

.

Ok cool so that at least gives me a start of what to use if my logs come back that is the reason.