i have for sale my d's developments back box,this is nearly a year old,when i bought this the car still had standard cat's & centre section & it sounded fantastic,but i have now changed to 100 cell cat's & supersprint unsilenced centre section & it was to loud for me, so i have changed to the quieter milltek back box. £230 including p/p (will also fit e46 M3)
pic of it when it was new,as you can see it is very well made.
Specification
# SpecificationFor street and track use
# Special equal length design
# Hand Craft
# 100% high quality 304 stainless steel construction inside and outside
# Fully polished
# Highest quality of insulation were used inside the mufflers to withstand the high heat generated by competition
# Huge weight reduction--weight only 15KG
# Acceptable noise level for street meanwhile maintain the race car tone
# Direct bolt-on
# 63.5mmx2 inlets
# 76.3mmx4 outlet tips
# Specific dedicated chambers inside the muffler section produce SUPER high flow while maintaining low-end torque
# 7 to 12 horsepower gain throught out entire RPM range
# Guarantee improvement
pic of it when it was new,as you can see it is very well made.
Specification
# SpecificationFor street and track use
# Special equal length design
# Hand Craft
# 100% high quality 304 stainless steel construction inside and outside
# Fully polished
# Highest quality of insulation were used inside the mufflers to withstand the high heat generated by competition
# Huge weight reduction--weight only 15KG
# Acceptable noise level for street meanwhile maintain the race car tone
# Direct bolt-on
# 63.5mmx2 inlets
# 76.3mmx4 outlet tips
# Specific dedicated chambers inside the muffler section produce SUPER high flow while maintaining low-end torque
# 7 to 12 horsepower gain throught out entire RPM range
# Guarantee improvement
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