06-19-2016, 01:10 AM | #15 | |
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With OFT, every tune can be a custom tune
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06-19-2016, 02:04 AM | #16 |
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If you want to throw away your car in a maximum period of 5 years, then do whatever you want. If not then don't mess up with the ECU or it should be the last thing you should do. As already mentioned this is not an easy engine (with eight injectors) and you need a very respectable tuner who knows what he is doing. In fact when you mess up with the ECU, you throw thousands of testing hours from the factory regarding performance, reliability and engine longevity.
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06-19-2016, 02:37 AM | #17 | |
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when you alter tables in stock ecu to optimise for headers or other minor mods, the actual software code(program) is unchanged and the standard saftey features in the ecu programming are retained in most cases a good aftermarket tune on an NA car is better for the engine than the stock tune, and results in far less knock and more consistent afr. however most people that get tunes often drive their cars far harder and often track autocross etc which places far more stress on vehicle than the average road driver. this can lead to the perception that tuned cars are more prone to failure below link is stock tune on 95 RON fuel about your 91 , id prefer to get my car tuned if i only had access to that fuel like in california or south africa. stock tune is same for all countries http://datazap.me/u/steve99/south-af...ata=2-20-27-28 . Last edited by steve99; 06-19-2016 at 02:48 AM. |
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06-19-2016, 03:17 AM | #18 |
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Hey Steve. Thanks for the feedback. If you fine tune the maps for a lower quality fuel, then yes I agree that it is better and you can also have less knock and more consistent afr. Of course, even this should be done by a respectable tuner and not as mentioned by the user with some buddy doing a street tuning.
The reason I made my comment is because I'm seeing tuners not doing just that. They are trying to get most of the juice of this engine without serious knowledge of the engine's reliability and longevity. For example, one gets a tune for a header and he gets a gain of 20 or even 30 whp. This is non-sense. A plain ECU re-adjustment just for the header and a full exhaust cannot give more than 10-15 whp. Getting the most from an engine is also fine for many owners, but it should be clear that there might also exist consequences ... Last edited by nikitopo; 06-19-2016 at 03:40 AM. |
06-19-2016, 04:20 AM | #19 | |
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Aftftermarket tuner does not have magic, they just dont have all the restrictions holding them back like oem engineer does, they also have cost and time restriction must produce car for price and on time. |
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The Following User Says Thank You to steve99 For This Useful Post: | Teseo (06-19-2016) |
06-19-2016, 05:42 AM | #20 | ||
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Wrapping or coating might be a solution, but how many are doing this? Last edited by nikitopo; 06-19-2016 at 05:54 AM. |
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06-19-2016, 06:05 AM | #21 | |
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I know of people who have destroyed cats in stock header with stock tune after tracking car, cats overheat and disintergrate, stock cats just not made for prolonged high speed track driving even on stock tune yes oem products are likely tested far more extensivly than aftermarket, but they only test for expected conditions. A lot of people that tune or add aftermarket parts drive car outside manufacturers expected conditions, hence they may expect a higher level of failure. However quality aftermarket additions like catless header, tuning and oil coolers, performace brake pads for example may actually enhance the reliability of the car when driven outside normal conditions, assuming they are quality products. Last edited by steve99; 06-19-2016 at 06:19 AM. |
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06-19-2016, 01:58 PM | #22 |
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Thank you Steve for not falling into the same old argument that tuners are the be all and end all, while OEM believers are luddites who think the world is flat. It really is situational, because the OEM has worked hard to get the most of the OEM components. The OEM tune however, does not have the flexibility to get the most from aftermarket components. So then, it really depends on what components you are running, whether or not you should run with a tune.
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06-19-2016, 02:44 PM | #23 |
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I agree with STEVE99 ,I thought the question was starting from scratch by a friend.
Also agree that factory tuning must be to the lowest common denominator, it must work high in the mountains as well as death valley 120F to -20F. It leaves gains available with a good tune that will not jeopardies the engine. |
06-25-2016, 02:02 PM | #24 | |
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I like those AVCS maps, should be running really good..... The factory maps are also used for emissions and make the engine run like crap..... Now save that set up and just make small changes at a time but that has to be really close for a good do it all map..... |
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06-25-2016, 03:04 PM | #25 | |
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I've been making small changes, and here's what I've got
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06-30-2016, 02:38 AM | #26 | |
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Running more DI had better MPG but this mix just seams to work the best.. I may make some low load adjustments.... Here's the DI angle map I'm using right now... Seams to run good, real close, didn't seam to like more angle below 4000 rpm... the stock map is really weird, probably for safety..... |
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06-30-2016, 02:59 AM | #28 |
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Working on a new exhaust map........
Put on a P & L Header no cat....... It hated my map below 4000 rpm and ran like crap, so I had to back the map down.... Seams like the exhaust cam has to dialed in to your exhaust system.... So I would assume the intake has to be tuned for your intake.... So std maps just won't work, I think a good map is a good place to start but you will have to dial in the map for your set up and driving style.... So adding a header you will need a tune..... Good thing is now the dip is now peak torque.... This header really rocks, I love the power..... |
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