[vetteboi88]

Check out this thread:

OSEcu Roms & XPT Tuning :: Log in

[EQ Tuning]

Originally Posted by Merchgod

If the closed loop delays are zero, then it makes no difference how the other closed loop tables are tuned as the ecu will use the fuel map to determine closed loop or open loop fueling. Any minimum enrichment on the fuel map -> richer than an effective 14.5-14.7:1 AFR depending on the rom, will determine the switch from CL to OL.

So, with the closed loop delays set to zero, the other closed loop tables are irrelevant and do nothing.

That's actually not true. The open loop dellays are just that... time dellays. The other open loop thresholds are still used if the dellays are set to 0. I would recommend playing around with the values to see how they work.

Thanks
-- Ed

[haasSTI]

Originally Posted by JD_STI

You are blaming turbo lag on the tune? Have you ever owned a turbo car? I'm not the best at explaining things, but I do know that with ANY turbo car you cannot slam the pedal down at 3k and expect the response of a N/A car such as an M3, which I have driven plenty. You need to get the RPM's up and let the turbo spool before you can expect any response. Sounds like you just need to learn the car.

I've had the car for 12k miles. I have learned to deal with it and I know how to drive it. It's a combination of a inferior tune and some characteristics of a turbo car if you ask me. Although the bucking that the car does while cruising is related to a tuning problem. There's a lot of little annoyances, I've just learned how to deal with them or get around them.

[JD_STI]

Originally Posted by haasSTI

I've had the car for 12k miles. I have learned to deal with it and I know how to drive it. It's a combination of a inferior tune and some characteristics of a turbo car if you ask me. Although the bucking that the car does while cruising is related to a tuning problem. There's a lot of little annoyances, I've just learned how to deal with them or get around them.

I agree that the bucking at low rpm's is due to the crappy tune. But the slamming the throttle at 3k and getting no response is just the nature of the beast. My car is stage 2 protuned and acts the same. you can't blame everything on the tune.

[vetteboi88]

With the latest revision of the open source map, I litterally have NO lag what so ever. None, nada, hit the pedal and you can here the turbo instantly spool up. The long lag that was inherent in the stock tune is not normal, go drive an '06 STI and see the difference yourself.

[Merchgod]

Originally Posted by EQ Tuning

That's actually not true. The open loop dellays are just that... time dellays. The other open loop thresholds are still used if the dellays are set to 0. I would recommend playing around with the values to see how they work.

Thanks
-- Ed

This is from reverse engineering the ecu, not "playing around with the values". The other tables are IRRELEVANT if the delay is zero. However, if it is non-zero (even 1), then the primary CL load/throttle tables come into play. If either is exceeded, a counter begins. When the counter exceeds the delay value, the fuel map is checked. If the current AFR is richer than about an effective 14.5-14.7:1 AFR (some minimum enrichment) then, and only then, will the transition from CL to OL occur. The other closed loop tables (veh. speed, rpm, etc.) can be thought of as maximum thresholds for delay. When any of these thresholds are exceeded, then the delay becomes zero, regardless. In that case (as is the same when your closed loop delay table is set to zero), the fuel map is checked as described above and is the only determination for the transition.

[Skter505]

Originally Posted by haasSTI

Are these Open Source tunes better than Cobb Stage 1? I am still unhappy with Cobb Stage 1 even with the latest version that supposedly "fixed" it. I mean, I'm driving today, and the hesitation is just so blatant. There is NO response at until 4k RPMs. I'm still confused if this is a ****ty tune or just turbo car. If I am cruising at 3k, and hit the throttle nothing will happen. If i slowly hit the throttle and give it a change to "wind up" then when I mash the throttle I will get at least some power.

well, I'm on gabedudes map posted from the xpttuning website (free) and so far I have no hesitation issues, turbo starts spooling way before 4k unlike stock, and with logging so far have 0 knock events...I can cruise down residential streets at 25mph without surging, also downhill on freeways at 70-75mph with out surging. before I always had to speed up, or put it in neutral. car feels great...Personally, Im very glad I decided not to spend $700 on a AP, especially after reading several comments like yours saying its "not fixed"

[JustinH]

yah after dropping 600 bucks on the ap all the **** issues are back. the afr's are 11.1 at wot which is nice, so my engine will not explode but the hesitation and the bucking is back. are any of the maps working

[JD_STI]

Originally Posted by JustinH

yah after dropping 600 bucks on the ap all the **** issues are back. the afr's are 11.1 at wot which is nice, so my engine will not explode but the hesitation and the bucking is back. are any of the maps working

Drive yourself up to Harman, spend another couple bucks for a protune and forget about it. They'll fix you up. It's the right route anyways. Every engine is different. You can't expect a map that was desiged to be safe on thousands of cars to be flawless.

[JustinH]

Originally Posted by JD_STI

Drive yourself up to Harman, spend another couple bucks for a protune and forget about it. They'll fix you up. It's the right route anyways. Every engine is different. You can't expect a map that was desiged to be safe on thousands of cars to be flawless.

hmmm so the protune on a stock car is worth it; it wouln't revert back to stock and pick up the **** habbits again?

[JD_STI]

Originally Posted by JustinH

hmmm so the protune on a stock car is worth it; it wouln't revert back to stock and pick up the **** habbits again?

I'd say for an 07 yes it's worth it. For me going from the cobb stage 2 maps to protune was a HUGE difference, quicker spool, holds boost better, no hesitation at all, nice linear powerband, etc. etc.; It hasn't reverted at all and I've put over 5k on my protune, i don't see why things would be different for just a stage 1 protune.

If you plan on ever going to stage 2, then I'd say wait till you ca afford the TBE and then get tuned. If you never plan on a TBE then just get tuned now, it's worth it for sure. Harman has tuned several stage 1 07's just because of the hesitation issue.

[JustinH]

yah im going to be staying stock and warranty friendly for the life of the car. so if the car will not pick up the bad habits again i will do it, how much is a protune anyways?

[JD_STI]

Originally Posted by JustinH

how much is a protune anyways?

Harman isn't the cheapest, most people pay about $500 which includes a 91 octane map and a race map for 95 octane. They may still have some deals for $350 for just the 91 map, not sure though.

[JustinH]

Originally Posted by JD_STI

Harman isn't the cheapest, most people pay about $500 which includes a 91 octane map and a race map for 95 octane. They may still have some deals for $350 for just the 91 map, not sure though.

holy hell 500 bucks. screw that 350 for 1 map is the most i will do, 500 is pretty steep

[JD_STI]

Originally Posted by JustinH

holy hell 500 bucks. screw that 350 for 1 map is the most i will do, 500 is pretty steep

call it what you want. I'm not complaining anymore because I spent an extra $500 on my $35k car.