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(Post Link) post #1 of 22 Old 07-02-14 Thread Starter
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Tuning a 1750 Ti SW

Hi there.

I hear that I can expect around 250 horses from a remap. Has anyone tried this on their 159? I also wonder whether a nice stainless steel autodelta exhaust system would give it a bit of subtle throatiness that it deserves??

Thoughts appreciated!

Iain
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(Post Link) post #2 of 22 Old 20-02-14 Thread Starter
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Gus at alfa tune quoted me £600 for the remap to 240-250hp plus a stainless steel twin exhaust system or about the same cost. Apparently really nice improvement through the gears and nice subtle sound enhancement. What do you reckon chaps?
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Sounds like a bargain.
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I've got the AHM remap (presumably by Alfatuner) and it is very good, won't give you a night & day performance change like the deisels but it's a much better car to drive now, throttle response is much sharper and more power available from around 3000rpm, plus the power doesn't tail off so quickly after 5000rpm, it feels more willing to rev

I'm sure a lot of exhaust systems will make the car louder, but I'm not sure they'll make it sound better - as exhaust tuning a turbo four for aural pleasure is very complicated and most of the aftermarket systems are not.

There's videos of 1750s with SuperSprint & Ragazzon systems on Youtube that may be worth checking out to see if you like that kind of sound

Last edited by phil-gtv6; 24-02-14 at 13:23.
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This might help you, ive done a bit to my GQV with chris and fred at Proalfa, not that far from buckinghamshire either

https://www.alfaowner.com/Forum/alfa-...ng-my-gqv.html
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My opinion is if you want to make an improvement to your car, you must make the remap to gus, an the exhasut also to him.
I think that this exhaust will work more correct because gus knows all the parameters (backpressure, gas temperature,etc etc) from his remap.
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(Post Link) post #7 of 22 Old 01-03-14 Thread Starter
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Spoke with Jono at Autodelta. He says he'd rather map the 1750 to about230hp as it's a small turbo. Might do that first and enjoy the improvements.
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what's the build date of your's? the later ones have a different turbo and are 220bhp out the factory (but not 'officiallly')
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It is correct that the later ones had another turbo, i think something with titanium,
but is it real that they had bonus 20bhp from the factory?
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(Post Link) post #10 of 22 Old 01-03-14 Thread Starter
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I have a 61 plate and it is indeed 220 or thereabouts rolling road
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(Post Link) post #11 of 22 Old 01-03-14 Thread Starter
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So in that case should get to about 250??
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Yes, info I was given from AHM was that 1st lot are 200->240 and later ones 220->250
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(Post Link) post #13 of 22 Old 02-03-14 Thread Starter
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Sounds good...have you had yours done? Jano was talking about a sports CAT and back box upgrade. Thoughts?
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I had mine done a couple of months back and it made the car so much better to drive, should have done it earlier!

The Autodelta sports cat is probably good but it costs a fortune. I'd sooner get the Ragazzon decat pipe and then slip a generic 200 cell sport cat in place of the centre silencer.

I can't imagine that changing the backboxes will give any extra power, as standard each one has 2.5" piping and only takes half of the exhuast gas - I'm sure it'd change the sound though
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The solution is for the exhaust system the above.
Catless downpipe, center box muffler with hjs 200cpsi euro5, and a pair o rear backboxeis cometely straight through! And of course new remap.
In italy the autodelta distributor, i think is romeo ferraris.
Imageshack - curvabrera175tb2page001.jpg


When i asked autodelta about the increase at the horsepower they told me :
Wider power range to 6100rpm (5500rpm standard car)
27 bhp increase
30lbft torque increase
Optimized cam timing for quicker throttle response
Optimized boost control
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I can vouch for the increased throttle response, before the remap it felt a bit lazy, but after the car feels eager
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I think that Alfatune and AHM are evolving their maps to see the engine confines to the cars tha they buy.
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(Post Link) post #18 of 22 Old 04-03-14 Thread Starter
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Mulling it over mulling it over...think I might see mine out of warranty this summer and go for it.
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(Post Link) post #19 of 22 Old 14-03-14 Thread Starter
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Ah, couldn't resist, the SW is booked in to Autodelta for a remap on the 31st. Looking forward to seeing how she runs!
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Augusto at Red Dot says you can map them yes, but the map has to be mild with the standard exhaust as the EGT runs too high.
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So great news. You also have to change the downpipe my friend.
We are waiting for the results.
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EGT's will be through the roof.

Get a decat downpipe or sport at depending on your country's regulations...

I'm putting a WMI kit on soon...
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