For those who have strapped on a larger turbo...
10-25-2003, 07:13 PM
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For those who have strapped on a larger turbo...
I saw some guys on vortex running larger turbos on stock software, chipped software, or revo alone. No special tuning, getting really good results. Until proper tuning could be done, with the proper manifold, DP and lines, could I run a T04E off my stock or GIAC X chip software with maybe just an MBC to help out with wastegate control?
10-25-2003, 07:44 PM
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Things are going to be way off.
First the right maf/injector setup would have to be found, then you would have to deal with the adv timing being off since the IAT's will be much lower with that larger turbo.
10-25-2003, 08:08 PM
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But why would those things necessarily be problems?
The MAF I could understand, but I'm sure it could be made to work. I was thinking it could be done off a higher bar fpr. The 225TT already has larger injectors. And as far as the much lower intake temps... would that also be much of a problem? The timing could be advanced through the adaptation, and that would conversely solve some of the fueling problem wouldn't it?
10-25-2003, 08:23 PM
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Your adv timing is set in the chip and can only adv so much before it hits its max.
Most of the time the ecu is pulling the timing back, change the intake charge or put in higher octane and it stops doing that. There is a point where it wont go any further. The main issue will be load settings when you go with a larger maf housing on a stock chip.
You can change the pressure with a FPR, but the ecu will have to remove even more fuel during short/long term even though you might get closer to what you want at WOT.
You can change the pressure with a FPR, but the ecu will have to remove even more fuel during short/long term even though you might get closer to what you want at WOT.
10-25-2003, 08:35 PM
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Hmm...
What about the stock maf as far as it can be pushed (how far is that?) I have an FMIC also.. so I think that the intake charge is already pretty darn cool.
Basically, could I just run equal boost or a bit more, maybe just like 28psi or so (which Gesttalt runs on his normal 225 K04). Then airflow and fueling should be okay.
Basically, could I just run equal boost or a bit more, maybe just like 28psi or so (which Gesttalt runs on his normal 225 K04). Then airflow and fueling should be okay.
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10-25-2003, 10:53 PM
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exceed MAF readings in the 250 range and you'll start to blow em..
Just like gary who has a nice collection of them..
Its not a plug and play application like those on vortex like to think.. The one case that I saw was MORE then just a stock ecu even though thats all he claims in his sig.. Just try and run 21psi on the stock program and see what happens..
F--- it, ill ruin the surprise.. You'll throw a code, and you'll go into limp mode..
What needs to be done when installing a turbo?
You'll need to enlarge the MAF housing so you aren't blowing them every day, then you need to figure out how to get more fuel in the system, because with a larger diameter housing you will be taking in more air at a lower reading causing your car to run lean.. Then you need to figure out how to fool the ECU into thinking your running less boost then you really are otherwise you'll be in limp mode.. As for running 28psi on a TT.. Gary is the only one.. And he has a setup unlike anyone else.. BTW.. what boost levels are you running this week? yeah.. no where near 28psi.. try getting the K04 to hold 25psi and then see what your car does.. If it was as easy as throwing a turbo on there and just adding an FPR don't you think a lot more people would be doing it? **** I would have installed a larger turbo a long time ago..
For the amount of money that you would spend trying to get it to work, you can just buy a kit and the truth it it will never work to its full potential without the programming..
If anyone here disagrees.. please speak up, otherwise Im bolting on a turbo next week and im going to let my stock ecu figure out the rest for me..
Its not a plug and play application like those on vortex like to think.. The one case that I saw was MORE then just a stock ecu even though thats all he claims in his sig.. Just try and run 21psi on the stock program and see what happens..
F--- it, ill ruin the surprise.. You'll throw a code, and you'll go into limp mode..
What needs to be done when installing a turbo?
You'll need to enlarge the MAF housing so you aren't blowing them every day, then you need to figure out how to get more fuel in the system, because with a larger diameter housing you will be taking in more air at a lower reading causing your car to run lean.. Then you need to figure out how to fool the ECU into thinking your running less boost then you really are otherwise you'll be in limp mode.. As for running 28psi on a TT.. Gary is the only one.. And he has a setup unlike anyone else.. BTW.. what boost levels are you running this week? yeah.. no where near 28psi.. try getting the K04 to hold 25psi and then see what your car does.. If it was as easy as throwing a turbo on there and just adding an FPR don't you think a lot more people would be doing it? **** I would have installed a larger turbo a long time ago..
For the amount of money that you would spend trying to get it to work, you can just buy a kit and the truth it it will never work to its full potential without the programming..
If anyone here disagrees.. please speak up, otherwise Im bolting on a turbo next week and im going to let my stock ecu figure out the rest for me..
10-26-2003, 07:43 AM
#10
You're getting good advice here......
<center><img src="http://pictureposter.audiworld.com/54525/dsc00070.jpg"></center><p>Don't get a turbo without the proper programming. Each turbo has a different map, and will perform differently than another turbo. T04E compared to K04 hits its boost levels at a higher rpm, and programmming has to know that. Otherwise you'll run rich at lower rpms and lean at higher rpms, for example. K04s can work on OEM programming or even K03 chips because the maps are nearly identical, but T3's and T4's or any hybrid version are an animal all thier own.
What happens when you run a T3/T4E with crappy programming & try to run crazy boost levels? I know, first hand......
What happens when you run a T3/T4E with crappy programming & try to run crazy boost levels? I know, first hand......