twisted 20g
21 July 2007, 06:37 PM
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twisted 20g
Is it worth twisting a 20g or do peeps think there is not much to gain from it?? other than better air flow..
reason behind this thought is i have a few bits in my shed that i would use. (to put my fabrication skills to there test)
reason behind this thought is i have a few bits in my shed that i would use. (to put my fabrication skills to there test)
21 July 2007, 06:50 PM
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i dont mind the work side of things as its what i enjoy doing.
i could then open up other areas, such like reversed manilfold, getting rid of the maf sensor (but then that means no more pfc)
i could then open up other areas, such like reversed manilfold, getting rid of the maf sensor (but then that means no more pfc)
21 July 2007, 07:52 PM
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You can can run the PFC with out a maf sensor and have a mafsim in place but this is only really needed on large turbos there would be no need on the 20g. And as said above it would be alot of work with little gain.
22 July 2007, 10:18 AM
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maf sim sounds very intresting. where can i find some information on this?
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22 July 2007, 10:33 AM
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un-ink are you say there is no point getting rid of the maf inless i have a bigger turbo than a 20g??
i can see your point but about not being worth it (needed) but the car is my99 sti and the maf are known for failing. i have replaced mine a few times now and its getting to the point that its now become more of a service part like fuel filter/oil filter. lol
thanks for your help
22 July 2007, 12:22 PM
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I was referring to the maf not being a restriction on air flow on the 20g hence only really used on the larger turbos when it becomes a restriction.
The other side to removing the maf with a mafless ecu or mafsim is a good thing in the respect that they do fail, however I am not sure how many people run the apexi mafsim on a daily driver etc your best to ask Andy f or jolly green monster, you will also need a avcr boost controller instaled as it uses the signal from the map and the tps sensor on top of the mafsim box.
The other side to removing the maf with a mafless ecu or mafsim is a good thing in the respect that they do fail, however I am not sure how many people run the apexi mafsim on a daily driver etc your best to ask Andy f or jolly green monster, you will also need a avcr boost controller instaled as it uses the signal from the map and the tps sensor on top of the mafsim box.
22 July 2007, 01:13 PM
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I was referring to the maf not being a restriction on air flow on the 20g hence only really used on the larger turbos when it becomes a restriction.
thank you for clearing that up (i'am abit slow so you have to stick with me)
The other side to removing the maf with a mafless ecu or mafsim is a good thing in the respect that they do fail, however I am not sure how many people run the apexi mafsim on a daily driver etc your best to ask Andy f or jolly green monster, you will also need a avcr boost controller instaled as it uses the signal from the map and the tps sensor on top of the mafsim box.
thank you for clearing that up (i'am abit slow so you have to stick with me)The other side to removing the maf with a mafless ecu or mafsim is a good thing in the respect that they do fail, however I am not sure how many people run the apexi mafsim on a daily driver etc your best to ask Andy f or jolly green monster, you will also need a avcr boost controller instaled as it uses the signal from the map and the tps sensor on top of the mafsim box.
thank you for clearing that up (i'am abit slow so you have to stick with me)yeah i guess people only do this when the they have a massive turbo and wish to run 90+mm intakes and such like.
if any of the mapper's wish to add there view on this, that would be great.
thanks
mark
Last edited by mark28; 22 July 2007 at 10:19 PM.
23 July 2007, 07:09 PM
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i think i will go this route as the compressor surge is un-real (almost snaped my neck lol!)
i think this is down to the inlet track??
mark
i think this is down to the inlet track??
mark
23 July 2007, 10:49 PM
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If your suffering from surge on the present inlet be careful you dont make it worse by presenting the turbo with larger diameter inlet.
On my current set up (20g on a 2.1) i've had to go down to a 45mm bore inlet for 100mm prior to the compressor inlet to stop it from surging.
On my current set up (20g on a 2.1) i've had to go down to a 45mm bore inlet for 100mm prior to the compressor inlet to stop it from surging.
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