turbo 1nzfe mapping issues - Toyota Yaris Forums

sportivoecho · 08-16-2015, 06:35 PM

i have a 2005 toyota echo sportivo (australia) which ive turbod using the zage turbo kit, im having a few issues with the mapping. ive had it tuned professionally at a reputable tune shop here in australia but the car cannot get away from a flat spot between 1500-2000rpm right before it builds boost. if we reduce the fuel in that area it gets worse, if we increase it it gets better but we can only increase it so much until the fuel economy goes out the door.

its very strange, its only in that one spot that it has a huge flat spot. i was wondering if anyone has had this issue or could lead me in the right direction?

thanks

Bluevitz-rs · 08-16-2015, 07:24 PM

What are you tuning with?

Do you have an AFR gauge installed?

malibuguy · 08-18-2015, 11:54 AM

Draw thru or blow thru MAF?

sportivoecho · 08-18-2015, 08:06 PM

im tuning with an EMS stinger v4. never had issues with these ecu's. and no i dont have a afr gauge but i go for a drive with the tuner and it is lack of fuel, we remove fuel it gets worse, we add fuel it gets better but its still there and it reaches a point were adding more fuel will be ridiculous because obviously there is another issue.

the flat spot is so frustrating!

its a draw thru MAF.

08-16-2015, 06:35 PM	#1
sportivoecho Drives: toyota echo sportivo Join Date: May 2015 Location: Australia Posts: 36	turbo 1nzfe mapping issues i have a 2005 toyota echo sportivo (australia) which ive turbod using the zage turbo kit, im having a few issues with the mapping. ive had it tuned professionally at a reputable tune shop here in australia but the car cannot get away from a flat spot between 1500-2000rpm right before it builds boost. if we reduce the fuel in that area it gets worse, if we increase it it gets better but we can only increase it so much until the fuel economy goes out the door. its very strange, its only in that one spot that it has a huge flat spot. i was wondering if anyone has had this issue or could lead me in the right direction? thanks

08-18-2015, 11:54 AM	#3
malibuguy Obsessed with 1.5L Drives: '10 PW Yaris Sedan Join Date: Feb 2011 Location: Westminster, MD Posts: 907	Draw thru or blow thru MAF? __________________ -Greg...the Exhaust Freak. -10 PW sedan 107whp/110wtq, full exhaust, suspension bits, TRD LSD -06 Highlander 3mzfe Limited AWD -82 Malibu, 1uzfe swap -97 Tercel coupe, 1nzfe/4.31 -96 Tercel coupe, Turbo 5efe, autoX -96 Tercel 4dr

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08-16-2015, 07:24 PM	#2
Bluevitz-rs 1NZ-6spd View User's Garage Drives: '05 6-Spd Vitz RS Join Date: Oct 2008 Location: Oshawa, Ontario, Canada Posts: 2,967	What are you tuning with? Do you have an AFR gauge installed?

08-18-2015, 08:06 PM	#4
sportivoecho Drives: toyota echo sportivo Join Date: May 2015 Location: Australia Posts: 36	im tuning with an EMS stinger v4. never had issues with these ecu's. and no i dont have a afr gauge but i go for a drive with the tuner and it is lack of fuel, we remove fuel it gets worse, we add fuel it gets better but its still there and it reaches a point were adding more fuel will be ridiculous because obviously there is another issue. the flat spot is so frustrating! its a draw thru MAF.