19t without upgrading injectors and map sensor? - The Saab Link Forums

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Old 07-07-2012, 06:19 PM  
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19t without upgrading injectors and map sensor?

is it unwise to run a 19t with stock hardware? I'm building this new motor and want to put a new turbo on it before I install the motor. but I don't want to buy injectors and the 3 bar map all at the same time.
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Old 07-07-2012, 06:25 PM  
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I've been running an 18t for almost a year with stock hardware. I don't push it too hard and haven't bothered to retune it yet since changing to the 18t. I'm really waiting to at least get a 3" dp. I think as long as you don't push it too hard you'll be ok.

also, I thought the 3 bar MAP was for T5? Your 9-5 would be T7
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Old 07-07-2012, 06:43 PM  
 
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You're considering running more air through the engine without adding mods to supply the corresponding fuel. Of course that's unwise.

T7 will be able to adapt to a point, but it's still pretty risky with the weak-sauce pistons....

You might hit fuel cut if you put your foot into it, but you might be OK if you take it easy....
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Old 07-07-2012, 06:52 PM  
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Don't forget, the engine is going to be a 234 block and rotating assembly.
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Old 07-07-2012, 06:53 PM  
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I've been running an 18t for almost a year with stock hardware. I don't push it too hard and haven't bothered to retune it yet since changing to the 18t. I'm really waiting to at least get a 3" dp. I think as long as you don't push it too hard you'll be ok.

also, I thought the 3 bar MAP was for T5? Your 9-5 would be T7
I think you're right about the map sensor.
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Old 07-08-2012, 06:39 AM  
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Don't forget, the engine is going to be a 234 block and rotating assembly.
Does not matter how strong the bottom end is if its leaned out too much it will still go kaboom ( and you won't be getting all the performance either)

I think you can push stock injectors enough for a 19t. but you may need a stronger FPR to do that.

Alternatively if you put in larger injectors you will not need a bigger FPR, its an either or thing.

Why would you be building a nice motor and turbo and cheap out on 250 bucks worth of injectors?
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Old 07-08-2012, 07:01 AM  
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The motor itself is costing me about $600 to build. Well, alright. You twisted my arm. Where can I find the injectors I need?
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Old 07-08-2012, 07:07 AM  
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I'd say pick a tuner, let them know what your goals are, have them help you decide a course, and stick to it.
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Old 07-08-2012, 07:33 AM  
 
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With a Volvo 16T on stock B205R internals and stock B204 programming, I would hit fuel cut at 4,500-4,800 RPM

Trionic will help save you from yourself, but only to a degree
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Old 07-08-2012, 08:03 AM  
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I tend to get a little boost happy when I start to feel it pull. I should probably play it safe.
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Old 07-08-2012, 09:19 AM  
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I tend to get a little boost happy when I start to feel it pull. I should probably play it safe.

They always run the best, right before they blow up
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Old 07-09-2012, 06:25 AM  
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How would it be possible to run lean on the mass air request system just from a turbo change? The car should reach desired air mass at a lower boost pressure now, I don't see anything that would make it any riskier than driving a stock car.
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Old 07-09-2012, 07:59 AM  
 
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How would it be possible to run lean on the mass air request system just from a turbo change? The car should reach desired air mass at a lower boost pressure now, I don't see anything that would make it any riskier than driving a stock car.
Makes sense....but Trionic isn't a fail-safe system -- ask the stock Viggen owners who poked a hole in the block from an aggressive downshift
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Old 07-09-2012, 04:08 PM  
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I would opt for running stock injectors and run a 3.5-bar FPR.
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Old 07-09-2012, 06:01 PM  
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How would it be possible to run lean on the mass air request system just from a turbo change? The car should reach desired air mass at a lower boost pressure now, I don't see anything that would make it any riskier than driving a stock car.
And trionic would be requesting more fuel than the system is delivering ( it does not meter ACTUAL fuel, just the request.)

I guess the question is if you trust the system why bother doing ti right, no need for any supporting upgrades, just run it
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Old 07-09-2012, 07:01 PM  
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And trionic would be requesting more fuel than the system is delivering ( it does not meter ACTUAL fuel, just the request.)

I guess the question is if you trust the system why bother doing ti right, no need for any supporting upgrades, just run it
I'm saying theoretically the air mass requested won't change since the software didn't change. Trionic would lower boost pressure with the 19t over the 15t to reach the desired air mass since the 19t flows more. Therefore mass air requested and measured mass air would be close to stock. So why would the desired fuel even change over stock? This is considering that everything remains stock and only the 19t is installed.
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