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04-08-2010, 03:32 PM | #1 |
Scooby Specialist
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RMIC
Location: Super Eurobeat Vol 193..Denver
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Rob's tune or PFC tune?
So I'm thinking of selling my PFC and going instead with an eprom chipped ecu. I'd love some suggestions!
Here is my "modlist" EJ20G Td05-16g Gruppe-S 4-1 UEL JDM uppipe 3" BPM turboback+divorced downpipe CX racing FMIC+VTA bov Fecker Adaptered 550cc Injectors KN SRI Apexi AVC-R 2002 wrx coilpack mod Walbro I saw that the thread with the dyno chart showed that it was on 92 octane gas (we only have 91 octane here), but the target boost and overall numbers are inline with what I'm looking for. Which way would you guys go? Keep PFC and get tuned or the other option? I would take the proceeds from the PFC and put it into the bushings, group n motormounts, lockbolts, and a SS.
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Last edited by JDMFLCL; 04-08-2010 at 04:10 PM. |
04-08-2010, 03:56 PM | #2 |
n00b Moderator
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well, in my opinion... er...um. Hey what was that?
<running away from vendor police> NEVER MIND! Last edited by rob; 04-08-2010 at 05:00 PM. |
04-08-2010, 05:01 PM | #3 |
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04-08-2010, 09:34 PM | #4 |
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with that setup it would be best (cost wise) to get the chip...
thats like everything u need. we'll see who gets more WHP. with a fmic but if u are getting a bigger turbo/injectors and stuff later on... maybe the PFC would be better in the long run. but to me the chip is enough. |
04-08-2010, 10:58 PM | #5 |
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Well I do have the PFC already. I'm just worried about the variances in altitude as well as the difference in gas.
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04-08-2010, 11:04 PM | #6 |
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04-08-2010, 11:10 PM | #7 |
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04-08-2010, 11:35 PM | #8 |
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04-09-2010, 12:52 AM | #9 |
Scooby Specialist
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04-09-2010, 12:55 AM | #10 |
n00b Moderator
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Phew, that was a close one....I think I am in the clear....for now
Just out of curiosity, what have you been quoted from your tuner for a full PFC tune? -Rob |
04-09-2010, 01:46 AM | #11 |
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350-400
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04-09-2010, 01:58 AM | #12 |
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Considering that you do already have the PFC, I would say get it tuned.
BUT, keep in mind that the PFC has no active knock correction. It will be up to you to recognize detonation and then use the hand controller to correct for it. It's easy to do a temporary "across the board" timing or fuel adjustment (that will reset to original tune when the key is turned off) with the hand controller. Robs tune uses the already very good OEM knock correction routines, and (IIRC) even improves on them. .....just something to think about that hasn't been mentioned yet..... |
04-09-2010, 02:11 AM | #13 |
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I've been reading up about that on RX7 forums. So basically just set the knock threshold lower than the preset "60" to make it more "accurate." Or get a J&S safeguard.
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04-09-2010, 02:33 AM | #14 |
n00b Moderator
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Maybe answering these questions for yourself will help. For the sake of argument, $800 + $400 for the PFC solution; what would you hope to get out of the PFC for the additional $1100 above and beyond an off the shelf stock ECU remap? The follow-on to that question would be, what other mods could you put $1100 toward?
I have a Haltech E6k on my Supercharged MR2. I love the ultimate control and flexibility of the standalone. It has allowed me to ditch the sucky Air Flow Meter, convert from a distributed ignition system to a wasted spark, direct fire setup (using high power RX7 coils no less) and eventually sequential injection with individual cylinder trim. With all that good stuff comes the realization that overall it will never run quite as nice as the stock setup and to really maximize the potential I need to spend a lot more time on the dyno futzing with it. Those are tradeoffs I can live with (plus there really isn't a stock ECU remap available). Thankfully it's not the car that I drive to work every day, or hand to my wife when I'm working on the family hauler. My RS fits that role nicely. It just so happens that it does it while shocking a few pompous vette owners from time to time I think you will get the most useful feedback if you made it clear what the goals and priorities are for your car. -Rob |
04-09-2010, 11:50 AM | #15 |
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I am at the same point.
I have basically the same setup just mbc. I haven't bought the injectors yet, but you can buy them on here anytime cheap. I already have rails that will fit the sti injectors, I don't need the collars. I have a chance to buy a link later today really cheap, like crackhead deal cheap. The thing is, I know myself all too well. If I got the link I would be out with a laptop everyday messing with it. When I had the 02 wrx, I was always making tuning changes, the car drove perfect and made great power, but I was always searching for more. If I got the chip, plug it in and forget it, which for me might be a good thing. To me the pro for the link is no maf, the pro for the pfc is scaling for different maf. Cons for both are no knock control, although I think the new G4 link has knock control. There's also hydra, but I don't know much about them. I took mine to a subpar dragstrip recently and went a 13.2 on 12psi with a 6K ecu. I want it to go low 12's on a good track with the 550 injectors and tune by chip or standalone. Anyone think that's reasonable? Car weighs 2700 with driver. But ask yourself this, would you be happy at that power level? If you're never going any bigger, I'd say get the chip. |
04-09-2010, 12:34 PM | #16 |
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Well my car is really just a DD that does AutoX duty. For now I might not be going bigger...but I might be refreshing the shortblock down the road with an ej205 SB of sorts. Powerwise...this is it.
Last edited by JDMFLCL; 04-09-2010 at 01:06 PM. |
04-09-2010, 01:25 PM | #17 |
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If it changes anything i have noticed nobody has ever mentioned ESL Live on nasioc ? that's the route I'm going soon.. its a hot flashable daughterboard that fits inside our ecu's. It's half the price of a PFC and retains the knock correction and isn't prehistoric.
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04-09-2010, 01:35 PM | #18 |
n00b Moderator
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You may want to double check with the local Canada folks if they got the ESL problems sorted out.
http://www.westernsubaruclub.com/smf...?topic=10589.0 The only other drawback I see is that it isn't user tunable, otherwise it's another good option for tuning the stock ECU. -Rob Last edited by rob; 04-09-2010 at 01:47 PM. |
04-09-2010, 01:39 PM | #19 |
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I considered going with the ESL board before I bought the PFC...but I didn't know anyone who was willing to tune it. (My guestimate is that it's similar to crome for honda's?)
I think I'll stick with the PFC since it gives me flexibility down the road if I go with a bigger turbo. I just bought a Z32 Maf. |
04-09-2010, 02:21 PM | #20 | |
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04-09-2010, 02:52 PM | #21 |
Scooby Specialist
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yeah they quoted me 490 USD at the time for the full tunable setup.
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04-09-2010, 02:57 PM | #22 |
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04-09-2010, 04:43 PM | #23 | |
n00b Moderator
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04-09-2010, 04:49 PM | #24 | |
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Quote:
http://www.enduringsolutions.co.uk/software/ |
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04-09-2010, 05:35 PM | #25 |
n00b Moderator
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That's not what I am talking about
The way I understand it, that software just let's you request modification to your map. They still have to send you new chips in the mail and in the end you really are just guessing with your values. I meant the software to do live tuning. This is what they give to their "dealers". It's kind of like Techtom or ECUTek (I think). |
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