I have a rebuilt Garrett GTA42 on my 2000 12.7 DDEC4 430/470, which has a wastegate on it now. What are the advantages/disadvantages to switch this to something like a BW 171702 without a wastegate?
12.7 DDEC4, get rid of wastegate?
Discussion in 'Trucks [ Eighteen Wheelers ]' started by fortycalglock, Mar 1, 2012.
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really westgate is the thing to protect boost lines and avoid NOx (if ECM applies torque limiting at max power turbo keeps boosting air, so fuel:air ratio goes lean and it leads to additional NOx emission)
really some engines got no WG and run well25(2)+2 Thanks this. -
The 171702 in most cases is a great choice they improve fuel economy and spool faster! The turbine on the W\G turbo is smaller and to control drive pressure they use a wastgate to keep the compressor wheel within its efficiency range. And as stated to control emissions.
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Removing or blocking the waist gate costs you fuel, putting extra air into the engine it does not need does no good. It can over-speed the turbo, the turbo on there is made to build boost early and keep it at a near constant level from 1100 to max speed, any other turbo without a waist gate could give you more boost,at higher speed, but a lot less at lower speeds.
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I have a buddy who has a 14L s60 with a Pdi stg1. Tune with egr delete.
He would now like to delete the factory vgt turbo.
My question is what would be his best option for a turbo? Would this 171... Borg you guys are talking about work well or is it a 12.7 application only. -
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