Visconti Tuning - Latest BRZ Flash Info

[Calum]

Originally Posted by Fast_Freddy

I too have seen amateur tuners posting about what they consider to be excessive knock correction. Unfortunately, anyone with an ECUTek cable and a laptop is an "amateur tuner", free to post about his excessive knock correction.


Are you really saying that my JV tune is dangerous and that if I continue to run it I will eventually suffer engine failure? Sounds like a bet is in order.

Nobody is saying all of JV's tunes are dangerous. We're saying any tune from any tuner could be. So take the 20 minutes and find out. It's your car and your dollars.

Also, you don't need knock to do damage. Excessive timing even without knock can cause stress above what the parts can handle long term.

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[brn12345]

Originally Posted by Fast_Freddy

So basically what I'm hearing repeated here is that running any JV tune is dangerous and not recommended. That being the case, can anyone please post some examples of JV tunes causing engine damage? TIA.

I would rephrase that and say "Running any improper tune could potentially cause damage to your engine". Having said that, here are a few things I would look for in a tune that could potentially cause damage (unless you know what your doing):

1. Bypassing the OEM safe values to make the car always has maximum ignition timing even when the ECU feels such timing is unsafe
2. Raising the rev limiter just for the sake of saying "my rev limit is higher than yours".
3. Raising ignition timing maps excessively
4. Bypassing closed loop operation excessively
5. Disabling DTCs (they are there for a reason, unless you want to disable something like the CAT related DTC)

[s2d4]

Haha, nice hints.

[Fast_Freddy]

Do you guys remember that I have a remote dyno tune that has already been logged, reviewed and adjusted by a master tuner and I only run 93? Are you really saying that I still need to buy a cable and do my own logging or it isn't safe to run? Since my tuner says the tune is complete and safe, who do I get to review these new logs? Should I post them here for some amateur review? Should I pay another master tuner to review them?


Is this what you recommend for all tunes from all tuners or just JV's tunes? I've made some more changes since the tune and plan to get back on the dyno again for another tuning session but despite your grave concerns I'm afraid that I still don't see any great urgency.


I can't believe that the same forum that convinced me to get a "blind" tune is now telling me that tuners can't be trusted. Thanks?

[Fast_Freddy]

Originally Posted by brn12345

I would rephrase that and say "Running any improper tune could potentially cause damage to your engine". Having said that, here are a few things I would look for in a tune that could potentially cause damage (unless you know what your doing):

1. Bypassing the OEM safe values to make the car always has maximum ignition timing even when the ECU feels such timing is unsafe
2. Raising the rev limiter just for the sake of saying "my rev limit is higher than yours".
3. Raising ignition timing maps excessively
4. Bypassing closed loop operation excessively
5. Disabling DTCs (they are there for a reason, unless you want to disable something like the CAT related DTC)

How would I go about determining if my ECUtek tune incorporates any of these things? I know my rev limit is unchanged but as for the rest, I have no idea what JV did. This is why I didn't want an ECUTek tune until I was talked into it by this forum's members.

[Yruyur]

Post your logs. You will eventually get some helpful information from some people.

Here are mine which was dyno tuned from visconti.

I opened another ticket just two days ago for two new versions of the flex fuel with race rom included and he already has sent me the files.

I really wish this thread would stay on topic and allow real information flow about the tunes. The fact is some people still have his tunes and would like to get updated information and not be afraid to post.


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[Kodename47]

The parameters that @Yruyur posted are all you need to check. Once you learn how to check your own logs then you will start to learn a bit more about the ECU and then speak with JV/whoever about any changes you think it needs. Lots of documentation online about basic tuning theory and the ECUtek log viewer is very easy to understand.

Knowledge is power and all that

[Sportsguy83]

Originally Posted by Fast_Freddy

Do you guys remember that I have a remote dyno tune that has already been logged, reviewed and adjusted by a master tuner and I only run 93? Are you really saying that I still need to buy a cable and do my own logging or it isn't safe to run? Since my tuner says the tune is complete and safe, who do I get to review these new logs? Should I post them here for some amateur review? Should I pay another master tuner to review them?


Is this what you recommend for all tunes from all tuners or just JV's tunes? I've made some more changes since the tune and plan to get back on the dyno again for another tuning session but despite your grave concerns I'm afraid that I still don't see any great urgency.


I can't believe that the same forum that convinced me to get a "blind" tune is now telling me that tuners can't be trusted. Thanks?

No one is telling you to panic, to be sarcastic, to not use your car, that it will explode, or anything similar. All people are trying to tel you is that it IS good practice to go back and check that your car is running good from time to time. Long Term Fuel Trims cannot be checked in a single Dyno session tune, they need some miles to buildup. That is when having a cable to log is good. Also, begin able to log your Knock and IAM helps to know our car is running really good.

I don't understand why you are so skeptical and defensive when all people are doing is trying to help. If you are not interested in knowing how your car is running because you believe it is running GREAT and that is all you want/need to know then more power to you.

Visconti is like any other tuner out there. Some have had the BEST experience with their tunes and some others have had really horrible experiences with his tunes. My AVO Turbo tune after 16 revisions still knocked even while cruising (-4, -5). If I kept that tune, there is a possibility my motor would have knocked itself to death. On the other hand, I've seen logs of tunes by him with ZERO knock, running buttery smooth.

So one last time, no one is telling you to PANIC and be defensive and sarcastic, they are all just saying "TRUST BUT VERIFY". If you don't want to that's fine.

Originally Posted by Fast_Freddy

How would I go about determining if my ECUtek tune incorporates any of these things? I know my rev limit is unchanged but as for the rest, I have no idea what JV did. This is why I didn't want an ECUTek tune until I was talked into it by this forum's members.

Are you sure your Rev limiter is untouched? I only ask because if you didn't specifically requested it to be left untouched, all of his tunes raise the Rev Limiter.

[utekineir]

The title "Master tuner" seems to be being thrown around like its an equivalent to a master plumber or electrician which have legitimate training and work experience requirements.

Not something acquirable with a checkbook and ballpoint pen.




Messing with cars is always pay to play. Wether its your time or your money be prepared to invest both.

[jamesm]

Originally Posted by Fast_Freddy

Do you guys remember that I have a remote dyno tune that has already been logged, reviewed and adjusted by a master tuner and I only run 93? Are you really saying that I still need to buy a cable and do my own logging or it isn't safe to run? Since my tuner says the tune is complete and safe, who do I get to review these new logs? Should I post them here for some amateur review? Should I pay another master tuner to review them?

honestly, it may sound kinda prick but you really shouldn't own a tune if you can't read a log. at the end of the day it's your car and your problem, and if something is wrong you are the only one who is going to spot it.

i've never read a log from an e-tune that i would feel comfortable driving on every day. as always, if you want something done right, it's best to just do it yourself. if that's not a viable option, you at least need to be able to confirm the quality of the work you paid for.

[post_break]

Originally Posted by Sportsguy83

Are you sure your Rev limiter is untouched? I only ask because if you didn't specifically requested it to be left untouched, all of his tunes raise the Rev Limiter.

Well wouldn't it be up to the end user to utilize that raised rev limiter. I mean all tunes have launch control, that doesn't mean I use it at every stop light. Same for raised rev limiter. Seems like a pointless thing to whine about.

[Calum]

Originally Posted by Fast_Freddy

Do you guys remember that I have a remote dyno tune that has already been logged, reviewed and adjusted by a master tuner and I only run 93? Are you really saying that I still need to buy a cable and do my own logging or it isn't safe to run? Since my tuner says the tune is complete and safe, who do I get to review these new logs? Should I post them here for some amateur review? Should I pay another master tuner to review them?


Is this what you recommend for all tunes from all tuners or just JV's tunes? I've made some more changes since the tune and plan to get back on the dyno again for another tuning session but despite your grave concerns I'm afraid that I still don't see any great urgency.


I can't believe that the same forum that convinced me to get a "blind" tune is now telling me that tuners can't be trusted. Thanks?

I should probably leave this as Sportsguy93 covered it, but I feel compelled to respond. Even a bad tune from JV will probably be better then stock. With the tip out and partial throttle knock in the stock tune, I would strongly suggest everyone get a tune from a reputable tuner. That you did get a tune from doesn't mean you got the tuners best work, or that your fuel quality didn't change as we're getting into colder months, or that your engine isn't running slightly differently.etc. etc. You have an oppertunity to ensure that everything is running well with your ~$30,000 toy. That's a lot of money to me and I do what I can to keep it running and lasting as long as possible.

Even the age of the gas can have a pretty large effect. I can see a noticable difference (about 3 degs of timing pulled) in the quality of the gas from a fresh tank to a two week old tank in my logs. Bill from DT has been kind enough to tune around that and try to make things work well under all situations. This is the kind of thing your looking for. Of course you're also looking to see if the tune is out to lunch, but it's much more likely that things are just different then they were a few months ago and should be tuned accordingly.

Now, please get off the defensive. You're coming across like a complete ass to guys that are trying to help you.

[Sportsguy83]

Originally Posted by post_break

Well wouldn't it be up to the end user to utilize that raised rev limiter. I mean all tunes have launch control, that doesn't mean I use it at every stop light. Same for raised rev limiter. Seems like a pointless thing to whine about.

Whine? Who exactly is whining? The only thing I did was explain how it is very possible his rev limiter is raised, nothing else.

Also, there are situations in which one might reach the higher rev limiter even if unintentionally (missed shift for example), so it does matter if it is set to 7500 or 8200, 9000 RPMs. This is different than launch control in which you need to follow a specific procedure to engage.

[fenton]

Originally Posted by Fast_Freddy

Do you guys remember that I have a remote dyno tune that has already been logged, reviewed and adjusted by a master tuner and I only run 93? Are you really saying that I still need to buy a cable and do my own logging or it isn't safe to run? Since my tuner says the tune is complete and safe, who do I get to review these new logs? Should I post them here for some amateur review? Should I pay another master tuner to review them?


Is this what you recommend for all tunes from all tuners or just JV's tunes? I've made some more changes since the tune and plan to get back on the dyno again for another tuning session but despite your grave concerns I'm afraid that I still don't see any great urgency.


I can't believe that the same forum that convinced me to get a "blind" tune is now telling me that tuners can't be trusted. Thanks?

It is extremely easy to review datalogs. There are only a couple major things to look for. It is good practice to review every once in a while....

There are tonnes of learning and compensations in these tunes so on a NA tune nothing should be able to get so far out of wack that your engine is at risk...

That being said it may not be running optimal. What may have work great on the dyno may not be running quite as good 1000's of miles later. Its just something to keep in mind, it is your car after all, dont you want the most out of it.