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02-03-2012, 08:15 PM | #89 | |
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Edit - maybe pm so we don't take this off topic? Thanks! |
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02-04-2012, 12:48 AM | #90 |
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Does the Procede utilize a fake crank angle signal to adjust timing like the Vishnu piggyback for the Evos? Haven't seen this Vishnu stuff since I was rocking an Evo 9 back in 2006...
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02-04-2012, 12:28 PM | #91 | |
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Shiv, how much more timing are you able to advance with the meth tune v. your regular non-meth tune? Also is the a/f changed for the meth tune? I am assuming you can run much leaner with meth as well? I ask because looking at the dynos, it looks like you could be getting more from the meth with a tune. Considering your tune alone gives 15hp, meth alone with no tune gives you 10-15, you would (or I would) think a meth specific tune being able to almost be a similar tune you could do for 100 octane could yield a higher result than simply adding up the benefit of both above. Is the methanol tune similar to a tune you would do on race gas? |
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02-04-2012, 12:38 PM | #92 |
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Vishnu m3 v m5? Given the m3 is about 450 pounds less than the m5 which is probably good for 40hp relative bump for the m3 using its power to weight, what kind of whp would the m3 have to put down to match the overall speed of the m5?
My understanding they put down 420-430 whp in stock form. My guess is an m3 putting down 390hp at the wheels, given its almost 500 pound weight advantage would put them pretty close. Any vishnu non supercharged m3's pull with any stock m5?S |
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02-04-2012, 04:44 PM | #93 | |
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02-04-2012, 06:51 PM | #94 |
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I read everything and it does not answer so whats the point of you chiming in or why not just answer the question if you know it instead of taking time to tell me exactly which posts are not the ones containing the data I need?
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02-04-2012, 08:16 PM | #95 | |
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"Without meth, most of the power gains afforded by any tuning solution (flash or otherwise) comes from running a 2-3 deg ignition advance in the upper midrange. This fills out the dip in power at ~7000rpm. I have yet to see any evidence of power gains as a result of VANOS tuning. And then again above 7000rpm, a bit more power can be extracted by enleaning AFR slightly (by just ~0.5 point). And with meth spraying, additional power is passively gained by dropping inlet charge temps (higher air density) and by running another 2-3 deg of timing throughout most of the power band. So to answer your question, ignition timing is the best contributor to power gains. Not surprising considering the gains that people see by just adding race gas and letting the DME run it's maximum timing set points. But at $7-8/gallon, that gets expensive/inconvenient after a while." The way I read this, Vishnu's meth spray alone without Vishnu's tune is like running 100 octane race gas and worth 10 rwhp, mostly due to a 2-3 degree timing advance. Add Vishnu's tune and you will gain another 5-10 rwhp by advancing timing 2-3 degrees through out most of the power band with maybe a bit more power above 7000 rpm by leaning out the mixture by half a point. You are welcome. More spoon feeding for the busy boy with no time to look for himself but time to write a snappy response: http://www.m3post.com/forums/showthr...ghlight=vishnu http://www.m3post.com/forums/showthr...ghlight=vishnu http://www.m3post.com/forums/showthr...ghlight=vishnu http://www.m3post.com/forums/showthr...=vishnu&page=4 Last edited by pbonsalb; 02-04-2012 at 08:27 PM.. |
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02-04-2012, 09:58 PM | #96 |
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Nobody knows why the sun comes up but it does and it seems to work out well for all of us! The Vishnu procede with meth works out well too! Let's not over think this!
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02-04-2012, 10:22 PM | #97 | |
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-vishnu tune alone with 91 octane-advanced 2-3 for lets say 10whp My question about this is if the plain stock tune already cannot use its fully advanced timing with 91/93 octane then how does adding 2-3 more degrees help if already can't use its stock advance timing limits? -Meth by itself good for 10 whp due to cooling effects and allowing the stock tune to fully advance its timing compared to 91/93. This part makes sense. The last question is if you use the meth-than is it like you say a 6 degree plus advancedment possible over the maximum stock tune advance? 6 degrees more than the typical timing set by stock tune for 91/93 octane? I think I am just slow but anyway thanks for the posts! |
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02-05-2012, 09:21 AM | #98 |
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Can we install the meth with out the proceed tune? I have the ess tune and was thinking of coupling it with the meth kit but not adding the proceed. Is this possible or do we need to purchase both?
Also I'm a bit confused, the dyno show cars with mods such as Catless that alone adds ~ 30 are the results 30 hp on top of the mods or is 30 in total over stock platform power? |
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02-05-2012, 11:09 AM | #99 |
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^^You need a procede to run pwm meth.
The graphs are pretty easy to understand..it shows baseline and power after procede and pwm, the other mods were on the car on the baseline and after so its a hain on top of that. |
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02-05-2012, 11:48 AM | #100 |
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The Procede controls the meth valves and controls the engine settings needed to get the maximum gains from the meth. So, you need both. In previous posts Shiv has recommended but not required that any flash tunes be removed. It depend on how aggressive the tune is. When I spoke to him he felt the Dinan tune was conservative enough to be ok, but wanted to do some data logging after installation to make adjustments. The people that have had it installed so far have removed their flash tunes.
The gains posted so far have been relative to the mods already on those cars. I don't think anyone has posted dynos from a stock car, but I would expect similar gains.
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02-05-2012, 05:27 PM | #101 | |
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02-05-2012, 07:09 PM | #102 | |
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Shiv-is the same gains expected to be had from a stock m3 with cats (oem cats)? Still looking at about a 30hp gain with full meth/proceed? Leave it to shiv to come into the scene like 4 years after all the other tuners have been at it and and provide a product that is so far above and beyond what others have not been able to do in 4 years! Every other tuner came up with a tune but nothing making it stand out. Really this is why some business flourish and others get by. creativity and genius seem to be shivs thing. He has dominated the n54 tuning world and now pulls out the best product for the m3 in a couple months of toying around! Cant wait. Nobody else is offering anything close to a 40hp crank gain from a bolt on keeping your cats. Awesome man! |
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02-05-2012, 08:08 PM | #103 | ||
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02-05-2012, 10:43 PM | #106 | ||
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02-06-2012, 09:27 AM | #108 | |
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That is the problem with a flash. You could just tell the dealer you really do not like the tune and want the most uptodate oem software. They might charge you however. The good thing about vishnu is its not a "tune" but rather a piggy back that basically alters signals from the stock tune. Therefore you can go back to stock anytime by just disabling the piggy box |
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02-06-2012, 10:11 AM | #109 | |
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Let me tell you that there is no way I would run a piggyback and meth injection on a car for a 15whp gain. No chance of keeping warranty and a lot of work involved in removing the system to go in for warranty work if you needed to. Other tuners havenet implemented it yet likely because the gains are so small for adding a complex system like meth injection to your car. This isnt a turbo car where meth injection adds 75-100whp and tq. No need to bash other tuners for not implementing something that is complicated and in my opinion not cost effective at all.
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02-06-2012, 04:35 PM | #110 | |
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Still, it's a bit harsh to say the system is antiquated, and over complicated. As I understand it there are three options for engine management (flash, piggyback, standalone) and they all have their pros and cons. To say that one is better than another is if not wrong then grossly superficial. Each has to be evaluated based on the application and the intended goals. Blanket statements are not helpful or productive. The complexity of the Procede Meth Kit, and it's installation and maintenance can be debated, but Shiv and Robert have provided lots of information on this forum and their website to at least make it as easy as possible to install and maintain the system. To say it isn't cost effective is a misrepresentation. The Procede Meth Kit is one of the cheapest dollar per horsepower options for the S65. It is also one of the last and newest of a very short list of NA modifications that doesn't involve modifying the displacement of the engine. Talk about something being not very cost effective. (No offense to the stroker guys out there. I'm just jealous. ) Vishnu Tuning has also done it's best to keep us informed of the risks to the warranty and what can be done to mitigate those risks. If you think other modifications discussed in this sub-forum do not pose some risk to your warranty and/or you are overly concerned about warranty then I think you are in the wrong sub-forum.
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