Enki's EFR Ordeal...

[Ziggo]

Originally Posted by Ziggo If the stock injectors are out flowing the fuel system there is a problem with the hardware

Though I admit this things ability to generate boost down low made me doubt myself. I still think you would pop the stock rods before you would run out of fuel.

[Enki]

Doubt yourself how?

Also, I won't be running as much boost down low as most other BT guys do.

[Enki]

Time to hit the hardware store. ~le sigh~



EDIT:
I will say, however, this issue did point out a small vac leak.

[Enki]

Some FFS practice last night in Mexico:

3-4-5 FFS 16 PSI (EFR MB WGA) - YouTube

3-4-5 FFS 16 PSI (EFR MB WGA) - YouTube

[littleloogy]

Next time you are there can you get me a burrito? I usually cargo jet my car and myself to Germany where I can enjoy the autobahn.

Car looks and sounds strong, good work!

Sent from my SAMSUNG-SGH-I747 using Tapatalk

[udntknw]

I miss stock suspension and being able to go through the whoops at 100.

just tapa it in.

[Enki]

Log 2 has some misfiring and reduction in fuel pressure up top; not sure if fuel system failure or just too much IDC or what. @Ziggo; @rfinkle2;

Targeting 11.6 AFR, getting 11.3 so I need to recalibrate this bitch to get back on track and below 100 IDCs....

Boost is also a touch higher than I want it to be as well... 15.5 deg peak timing (@ 6500) and ~350 corrected peak g/s; still no WMI.

[Enki]

Some differences between my highest HP ever pull and the one I just did (datalog1 in prior post):

Personal record log has the following:
~43 degrees lower IAT (57 vs 100)
~31 degrees lower BATs (~80 vs 115)
~6.5 degrees MORE timing @ 6500 (22 vs 15.5; MBT was NOT found yet @ 22 degrees)
~0.14 less peak MAF voltage (4.07 vs 4.2)
~2.8 PSI less peak boost (20 vs 22.8)

Needless to say, I'm a bit hopeful at the moment.

[rfinkle2]

Looks good. Are you using the injector phasing multiplier?

I think cld12pk2go is using the lowest values I've seen, but I get away with .95 regularly. That will buy you some headroom for now.

Also, I would imagine you've seen the 80% wgdc cycle thread?

It looks like your tapping the rail valve ecu pressure read limit as well.

I hope that is what you were asking.. Otherwise, looks nice.

[Enki]

I'm not using the phasing multiplier.

My question has to do with the fuel pressure dipping below 1600 in datalog2 and revolves around the fact that i just spent some major coin on a brand new HPFP, Autotech Internals, and a rail hardline to fix a pressure drop issue when the engine was hot...

Basically I'm wondering if I should pick up a new DW ITFP/filter/regulator or not (I'm hoping not), or if the pressure drop is because I might actually be out of fuel this time.

[rfinkle2]

I see 1575 and a few cells < 1600, but that is a signature of the Autotechs in general, imo.

They are wild in term of fluctuation.

FWIW, I've seen up into the 130 IDC's and still been able to fuel the car properly.

(I am not recommending that, but I believe that if you are using the WGDC fix, you are pushing the limit, but that is not causing the pressure loss, which imo, is nothing to be concerned about).

Did the car feel as if it was breaking up?

[Enki]

There was definitely some audible as well as felt missing/quasi-afterfiring. Not quite like shotgun blast afterfire, but more like spraying past spark event maybe.

[rfinkle2]

Originally Posted by Enki There was definitely some audible as well as felt missing/quasi-afterfiring. Not quite like shotgun blast afterfire, but more like spraying past spark event maybe.

FWIW, if you feel like you can catch a trend where the pressure dips, you can try running the miss by a % above the target in the fuel maps.

I have done that when there is a repeated drop below target pressure and it works well.

Any chance you are blowing the plugs out @Enki; ?

[Enki]

Freshly gapped @ .024 w/feeler gauge (very gently), stock heat range NGKs.

I'll probably wind up ignoring this until after I've got everything dialed in, but just wanted a second (and third) opinion seeing as how I just spent a shitload of money replacing my fuel system.

[littleloogy]

Originally Posted by rfinkle2 I see 1575 and a few cells < 1600, but that is a signature of the Autotechs in general, imo. They are wild in term of fluctuation.

Have you seen a more consistent fuel pressure with a similar situation using different branded internals?

[rfinkle2]

Originally Posted by littleloogy Have you seen a more consistent fuel pressure with a similar situation using different branded internals?

Yes. The CPE pump is the most stable, and then KMD v2, I've only seen 2 cars with CS internals, and they were similar to the KMD v2, with autotech's being the least predictable.

Nothing wrong with the Autotechs, they are in a lot of cars with a lot of miles, seem to produce more widely varying pressure with the controls and hardware we have access to.

[Enki]

I'm commanding 1800 PSI at/above 2.0 load though. >400 psi variance is a bit much to call an issue with pressure consistency, isn't it? I'd understand up to 5-6% variance (100 psi) but 16% (400) is a bit on the high side IMO.

[rfinkle2]

Originally Posted by Enki I'm commanding 1800 PSI at/above 2.0 load though. >400 psi variance is a bit much to call an issue with pressure consistency, isn't it? I'd understand up to 5-6% variance (100 psi) but 16% (400) is a bit on the high side IMO.

No doubt about it James. There is definitely a lot going on in the high rev region of you map (and many guys taxing the fuel system) when over 100 idc's.

Your WMI kit when you add some support may take some of the volatility out.

[Enki]

I won't be tuning for WMI though. I'm going to get as close to 400 WHP as I can, assuming room to grow, dial it back a bit, convert to load tune, then finish the wmi install and run it like that. Boost pressures will go down, efficiency will go up, and if I run out of squirt juice, well, no worries; already tuned for it.

Also 400 WHP @ 18 psi will be amusing.

[Enki]

Let's hope this stops when I calibrate the MAF again; look at the HPFP actual data towards redline.

[littleloogy]

That's scary, I'm glad you let off. You are sucking that hard line dry. If your MAF CAL does not fix it, will you be going any leaner on your target AFR to gain pressure or will you just target a lower PSI in that range?
If there is a way, we have to figure out this volume problem with our pumps. Running on the edge of your fuel limits would be nerve-racking, even for me.

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[Enki]

I'm running e30, zero fucks given. I've hit 20 PSI @ 15 afr.

[Ziggo]

A log like that could be a leaky relief valve. The hardest workout for the HPFP is really at peak load/torque not peak power. If it can keep up at 2.15 load at 5300 RPM it should be able to keep up at 2.15 load at 6140 RPM.

Regardless, you really need supplemental fueling. You are pushing the stock system well beyond where I would consider it effective. You may be NCE about knock and bending a rod but I would still be concerned about cracking a ringland.

If no supplemental fueling is in the future, I would back down the load/boost and crank up the timing to make power instead. You will gain alot of power by adding just a few degrees from where you are at.

[Enki]

"FUCK. That was awesome." My pops said, laughing, when I raped my tires in 2nd next to a bus stop on the way to Home Depot to pick up a new air compressor.

LOL Gotcha. This is actually a good news post.

Leaned out to 11.75 target, recalibrated slightly, and did a pull up and down a hill near my house. Run "3rd 1" had a single cyl partial misfire, but I can't see it in the logs at all...Probably overrunning spray window, so 4.2 volts is likely all I'm going to get out of it now (and with WMI, I can probably do that on the low boost canister). Run "3rd 2" was slightly uphill on a shitty piece of road (the other side, where log 1 was done is in good shape) and thus, I had traction loss.

3rd gear rodeo is for the fucking win.

Still 15 degrees timing, btw.

Oh and before I forget, I thought about what you said in your prior post, @Ziggo;, and decided to test that theory. The logs "1800 psi climb" and "2074 hold" are engine braking tests to see what fuel pressure does. I'm pretty sure I have a 2075 PRV, so that could potentially explain the temporary drop to 2071 (it might have cracked open).

I think it might be safe to say that I'm actually out of fuel @ 23 PSI with no meth. Anyone agree?

[Enki]

Well, if it ain't one thing, it's another; might have to price out a primary o2 sensor here soon.

P2251 (pertains to primary O2) CEL came up for the second time today. Log looks funky with exact/duplicate afr reading for a good long stretch of the log. Strangeness.

[Enki]

Took a log the other day, just got around to looking it over. New map has boost backed down a bit, and more aggressive overrun protection (which you can see in the vdyno.

60-100 times improved in this log from 5.48 to 5.29, with 97 degree intake and 130 deg peak BATs. Obviously, there's still a bunch left on the table here....

I'm going to go back to the low boost canister as I likely won't have fueling issues on it, at any temperature, and then finish the tune.

Link for log is here:
http://www.mazdaspeedforums.org/foru...s-datalog1.csv

[Enki]

Just did a log a little while ago to back up the above numbers and make sure everything was running well. Everything looks good in the log (and I set yet another personal best 60-100 of 5.152), and makes me feel better about choosing to go back to the low boost EFR WGA; WMI will pick up that airflow no problem I'm sure.

[littleloogy]

Fuck me. I have a feeling I will see high 4's next. Awesome job!

Sent From a Galaxy, Far Far Away...

[Enki]

Nah low 4s is my goal. Gonna figure out what airflow I can get on the LB WGA and set that as my load limit, finish the tune and THEN add WMI.

[ItsNox]

Originally Posted by Enki Nah low 4s is my goal. Gonna figure out what airflow I can get on the LB WGA and set that as my load limit, finish the tune and THEN add WMI.

Are you planning on using meth for cooling or fueling or a little of both? Good to see she's running so well!!

Sent via Tapafail

[Enki]

Cooling only, and yes it is. Did another hot run today and it ran fantastic. This weekend, I'll be swapping the LB WGA back in and continuing the tuning process.

[ItsNox]

Originally Posted by Enki Cooling only, and yes it is. Did another hot run today and it ran fantastic. This weekend, I'll be swapping the LB WGA back in and continuing the tuning process.

Hot runs are where I really fall on my face so I'm picking up a DO Stg 2 w/ d07 ASAP. Have you decided which meth kit/nozzle you're going with? I set up a nator dyno day and watching BATs on a friends car sit at 70 degrees through 3 dyno runs was convincing as fuck. I lost almost 25hp & 30tq at 170 BATs on the dyno. Fuck that I need me some methz. Literally eyeing the kit right meow.....

[Enki]

I've already got a full custom kit installed with a do5 nozzle; just need to wire it up.

Also have a d07 on hand in case the 5 won't cut it.

[Enki]

Minor update; back on the low boost canister; I'm fairly certain that 20 psi + meth will get me close enough to 400 WHP that I can be happy. Plus, the boost control is much, much nicer with the LB WGA as it's much less touchy vs the MB canister.

Once I start hitting boost targets, I'm going to find MBT across the entire rev band, then back it down a bit and see what it does. From there, WMI install will be completed and the tune finalized.

As a side note, yes, my MAFCAL is wonky; I decalibrated it as it's the best way to test for the O2 sensor issue I'm currently having, which seems to have improved significantly by repositioning the cable slighty behind the foil shield behind the turbo, though I'm probably still going to remove the secondary O2 and swap out the primary for new.

[Enki]

So 15 degree lower BATs netted an 8 WHP increase (though the road was different from original log above). A 5 nozzle on 50/50 might be able to get me another 10 ish, but I may have to up my AFR targets so I don't run too rich.

Edit: As a side note, I'm hitting 4.08 peak MAF volts on a 3.5" custom intake (blue line).

[86AmishMs3]

Originally Posted by Enki Nah low 4s is my goal. Gonna figure out what airflow I can get on the LB WGA and set that as my load limit, finish the tune and THEN add WMI.

To get my 4.3x I was around 24psi and 18.5* peak timing

[Code Monkey]

Overall, are you happy with the turbo and the whole kit? Would you do it again? Or is it not worth the headache and go for a different setup?

[Enki]

If I could do it all over, I'd keep myself in check and wait for the 7163 (higher efficiency, possibly better spool) and opt for ceramic coating on everything to keep temps down a bit more.

That's pretty much all I'd change, TBH.

[Enki]

19.8 peak PSI, 120 starting BATs, 145 ending BATs. More left in it before I start adjusting timing.

[shadesofgray19]

Originally Posted by Enki the 7163 (higher efficiency, possibly better spool) and opt for ceramic coating on everything to keep temps down a bit more.

This is my dream set up.