Recently purchased an exhuast/chip package for my 2004 120 (1kz) from Berrima Diesel,
3inch allumised steel full exhuast (included) dump, mandrel bent (no brand) + DP CHIP.
Although the power gains with both seem to be more than noticeable, I have noticed some odd behaviors and want to know peoples feedback.
Firstly I just added the exhuast, these are my findings.
Freely REVs now and accelerates through to band much better than stock system
However, I feel like I've lost holding power and bottom end tourque, it's hard to explain but I really have to ride the clutch to build up enough pressure to get the the car moving on a hillstart/cold engine, also going up hills i have to drop back gears because i loose REV's/momentum
its like blowing air through a big straw, I did lots of research over different systems (Beaudesert recommended 2 3/4, berrima recommended 3inch)
I read many posts with conflicting statements surrounding back pressure of 3inch exhuast, however i tend to believe that backpressure should almost always be handled by the turbo and the size of an exhuast on a turbo car shouldn't really affect anything other than allowing gases to escape faster.
As said the car is is REVing better on flat road when i put my foot down, however seems to struggle more than it used too with stock exhuast under load, the only thing I can think that's causing this is back pressure, but why.....
Secondly I've added the DP Chip,
Noticed an increase in power through the MID/TOP end, running it on setting 9 (max) i've almost fixed bottom end power but still struggles a little to hold when under load, almost considering purchasing the beaudesert (2 and 3/4 system) to confirm my suspicions,
I want my low end torque back
3inch allumised steel full exhuast (included) dump, mandrel bent (no brand) + DP CHIP.
Although the power gains with both seem to be more than noticeable, I have noticed some odd behaviors and want to know peoples feedback.
Firstly I just added the exhuast, these are my findings.
Freely REVs now and accelerates through to band much better than stock system
However, I feel like I've lost holding power and bottom end tourque, it's hard to explain but I really have to ride the clutch to build up enough pressure to get the the car moving on a hillstart/cold engine, also going up hills i have to drop back gears because i loose REV's/momentum
its like blowing air through a big straw, I did lots of research over different systems (Beaudesert recommended 2 3/4, berrima recommended 3inch)
I read many posts with conflicting statements surrounding back pressure of 3inch exhuast, however i tend to believe that backpressure should almost always be handled by the turbo and the size of an exhuast on a turbo car shouldn't really affect anything other than allowing gases to escape faster.
As said the car is is REVing better on flat road when i put my foot down, however seems to struggle more than it used too with stock exhuast under load, the only thing I can think that's causing this is back pressure, but why.....
Secondly I've added the DP Chip,
Noticed an increase in power through the MID/TOP end, running it on setting 9 (max) i've almost fixed bottom end power but still struggles a little to hold when under load, almost considering purchasing the beaudesert (2 and 3/4 system) to confirm my suspicions,
I want my low end torque back
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