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Hesitation in boost and high rpm

Started by polskifacet, December 04, 2016, 12:27:49 AM

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TopherSho

Quote from: StealBlueSho on May 17, 2017, 09:41:55 AM
You don't want fuel pressure drops, even momentarily, below 1500 psi... but that's really up to your tuner and how comfortable he is with your car...

RGR that,  AJP has not made a concern of it so i called it good. but it is good to learn as much as i can.
2010 non-pp, 98k miles, 3-bar,  .026 plugs, SNOW-KIT STG1, AJPTurbu tune#35, 15.5+psi
Best 0-60 public road 4.35s
Best 1/4 of 12.61 no DA correction

polskifacet

Since my fuel pressure is fine at 75ish ambient,
what does that say about the fuel system? The answer I'm looking for is how far off am I from a model tuned sho? My thinking is if im within 10% of a model tuned sho then there is nothing broken its just lazy and I can confidently grab the LMS pump and get those gainz lol. IIRC something like 40 hp is a nice bump.
AEM Dryflo drop in. PP Transmission Cooler and thermostat. 160 tstat, 3 bar map, plugs, AJP 93 Tune, PP Shocks and Springs

TopherSho

Quote from: polskifacet on May 17, 2017, 10:47:07 AM
Since my fuel pressure is fine at 75ish ambient,
what does that say about the fuel system? The answer I'm looking for is how far off am I from a model tuned sho? My thinking is if im within 10% of a model tuned sho then there is nothing broken its just lazy and I can confidently grab the LMS pump and get those gainz lol. IIRC something like 40 hp is a nice bump.


wait ... is someone claiming a 40hp gain from a HPFP?  As in your tuned to the hilt alreasdy, then get a new pump and gain 40 MORE hp?
2010 non-pp, 98k miles, 3-bar,  .026 plugs, SNOW-KIT STG1, AJPTurbu tune#35, 15.5+psi
Best 0-60 public road 4.35s
Best 1/4 of 12.61 no DA correction

polskifacet

dont quote me but maybe stealblue said that it has similar gains to spraying meth? again I'm​ kinda guessing.
AEM Dryflo drop in. PP Transmission Cooler and thermostat. 160 tstat, 3 bar map, plugs, AJP 93 Tune, PP Shocks and Springs

StealBlueSho

Quote from: TopherSho on May 17, 2017, 10:49:58 AM
Quote from: polskifacet on May 17, 2017, 10:47:07 AM
Since my fuel pressure is fine at 75ish ambient,
what does that say about the fuel system? The answer I'm looking for is how far off am I from a model tuned sho? My thinking is if im within 10% of a model tuned sho then there is nothing broken its just lazy and I can confidently grab the LMS pump and get those gainz lol. IIRC something like 40 hp is a nice bump.


wait ... is someone claiming a 40hp gain from a HPFP?  As in your tuned to the hilt alreasdy, then get a new pump and gain 40 MORE hp?

No, LMS has not released ANY information on the tuning of the new HPFP they are developing. They have said they will release information when the pump is available...

I have been on this like white on rice...

TopherSho

Quote from: StealBlueSho on May 17, 2017, 10:52:54 AM
Quote from: TopherSho on May 17, 2017, 10:49:58 AM
Quote from: polskifacet on May 17, 2017, 10:47:07 AM
Since my fuel pressure is fine at 75ish ambient,
what does that say about the fuel system? The answer I'm looking for is how far off am I from a model tuned sho? My thinking is if im within 10% of a model tuned sho then there is nothing broken its just lazy and I can confidently grab the LMS pump and get those gainz lol. IIRC something like 40 hp is a nice bump.


wait ... is someone claiming a 40hp gain from a HPFP?  As in your tuned to the hilt alreasdy, then get a new pump and gain 40 MORE hp?

No, LMS has not released ANY information on the tuning of the new HPFP they are developing. They have said they will release information when the pump is available...

I have been on this like white on rice...

rgr that..
2010 non-pp, 98k miles, 3-bar,  .026 plugs, SNOW-KIT STG1, AJPTurbu tune#35, 15.5+psi
Best 0-60 public road 4.35s
Best 1/4 of 12.61 no DA correction

polskifacet

I know for sure you can't run corn without further modifications. No info on what that would be. I'm sure they will try hard to give us a good bang for the buck as most of the community doesn't have meth + lms hpfp + rebuilt turbos etc.
AEM Dryflo drop in. PP Transmission Cooler and thermostat. 160 tstat, 3 bar map, plugs, AJP 93 Tune, PP Shocks and Springs

StealBlueSho

Quote from: polskifacet on May 17, 2017, 10:52:04 AM
dont quote me but maybe stealblue said that it has similar gains to spraying meth? again I'm​ kinda guessing.


I have never made that claim. What I have said is that when I spoke to Dave at LMS about their Alky Meth Kit a couple weeks ago he mentioned it might be worth while to wait for the HPFP. He stated that the biggest advantage to their meth setup is offsetting the stock HPFPs limited ability to maintain fuel pressure after tuning.

The new HPFP is supposed to assist with that issue.

No tuning information or gains have been released from LMS or Mustang RTR about the new pumps coming out.

StealBlueSho

Quote from: polskifacet on May 17, 2017, 10:58:09 AM
I know for sure you can't run corn without further modifications. No info on what that would be. I'm sure they will try hard to give us a good bang for the buck as most of the community doesn't have meth + lms hpfp + rebuilt turbos etc.

FoMoCo has a tune from AJP that can run E85 I believe..

StealBlueSho

Here is the thing right... if you really want to know, call LMS. I have called several times to talk to them about various setups and gear. Ethan, Anthony, Dave, and Matt are the guys I have spoken too and they have always been very upfront and informative. My guess is the more people that call, the more pressure for them to release stuff... aka... the sooner they can start getting a return on the dev costs for their stuff...

polskifacet

Seeing some pretty high boost spikes 17 psi which do get me down to around 1500 psi but it recovers pretty much instantly.
AEM Dryflo drop in. PP Transmission Cooler and thermostat. 160 tstat, 3 bar map, plugs, AJP 93 Tune, PP Shocks and Springs

FoMoCoSHO

Quote from: StealBlueSho on May 17, 2017, 11:00:57 AM
Quote from: polskifacet on May 17, 2017, 10:58:09 AM
I know for sure you can't run corn without further modifications. No info on what that would be. I'm sure they will try hard to give us a good bang for the buck as most of the community doesn't have meth + lms hpfp + rebuilt turbos etc.

FoMoCo has a tune from AJP that can run E85 I believe..
Yup. Trying some new fun stuff with e45 as well.

polskifacet

Still looking for how much fuel I'm "missing". If the rail fuel volume is maxed out right now @ 13 psi of boost and 80f ambient where am I compared to another SHO?
AEM Dryflo drop in. PP Transmission Cooler and thermostat. 160 tstat, 3 bar map, plugs, AJP 93 Tune, PP Shocks and Springs

StealBlueSho

Welll... with LMS 4+X Race Tune I have 1900+ at the rail with ambients at freezing....

Dunno if that helps?

polskifacet

Quote from: StealBlueSho on May 21, 2017, 08:57:35 PM
Welll... with LMS 4+X Race Tune I have 1900+ at the rail with ambients at freezing....

Dunno if that helps?

Not sure how much more demanding the 4X tune is but seems to me like my car is somewhere under 15% off of yours. I think It's close enough not to worry about the pump not helping.
AEM Dryflo drop in. PP Transmission Cooler and thermostat. 160 tstat, 3 bar map, plugs, AJP 93 Tune, PP Shocks and Springs