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i recently purchased a turbo kit which contained a garrett gt28 turbo n internal wastegate set at about 5.5 psi, e.l mani, charge pipes, oil lines water lines, bov, intercooler, 2.5 down pipe, generic air filter, map management unit( black box ) , 2 additional injectors which come installed in a 3 inch tbody spacer n a fuel management unit. this has been installed in a 2001 civic non vtec 1.5 ( d15y3 ). due to tax n the duty structure in this country the non vtecs are a 1.5 n the vtecs are 1.6. with the kit i got a 10 page manual which had the installation details n the last page had instructions for the fmu n this is how its printed;
1. MAX P +0.53kg R=5900
2. RPM PRESET =8500
3. DEL TIME =060 S ( TURBO TIMER )

4. BOOST IJ
p=0.0kg , t=1.8ms
p=0.1kg , t=2.8ms
p=0.2kg , t=3.2ms
p=0.3kg , t=5ms
p=0.4kg , t=6.6ms
p=0.5kg , t=8ms
p=0.6kg , t=10ms
p=0.7kg , t=13ms
p=0.8kg , t=14ms
p=0.9kg , t=15ms
p=1.0kg , t=17ms
p=1.1kg , t=19ms
p=1.2kg , t=21ms
p=1.3kg , t=23ms
p=1.4kg , t=24ms
p=1.5kg , t=25ms
p=1.6kg , t=26ms
p=1.7kg , t=27ms
p=1.8kg , t=28ms
p=1.9kg , t=29ms
p=2.0kg , t=30ms

5. RPM IJ
rpm=1500 , t=0ms
rpm=2000 , t=0ms
rpm=2500 , t=0ms
rpm=3000 , t=0ms
rpm=3500 , t=0ms
rpm=4000 , t=0ms
rpm= 4500 , t=0ms
rpm= 5000 , t=0ms
rpm= 5500 , t=0ms
rpm= 6000 , t=0ms
rpm= 6500 , t=0ms
rpm= 7000 , t=0ms
rpm= 7500 , t=0ms
rpm= 8000 , t=0ms

6. ADJUST RATE =68%
7. PRE LIMIT =0.8KG
8. ACYC=17 , T=1.8MS

now if i insert these numbers in the fmu the car just sputters at 4000 rpms n doesnt go beyond that. if i increase the time, t , at every boost point n the time, t , at every rpm increment then the car gets better. i havent changed the adjust rate n the ACYC since i have no idea what they mean. the boost time n rpm time can be increased by 0.2 ms till 51 ms being the highest point. what i dont understand is that sometimes the car performs better at part throttle than wot. what is the correct way to tune with such functions, now i know that having the car dynod is the best way to tune a car but since we have no dynos in this country i am left with no other option but to ask ull.
forgive me for this awfully long post but i thought it was best that i explain the whole scenario. any feed back will be much appreciated.
thanx in advance.
btw this kit was bought from a supplier in thailand.

 
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do you have a check valve ?

sounds like ur map sensor is sensing boost and making the car flutter like that.

 
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no i dont have a check valve. i removed the map management unit n there was no sputtering but the car hits the limiter at 3500 rpms n if i just remove the additional injectors n leave the map unit in then it still sputters. my boost gauge shows 7 psi by 6000rpms then it drops to 6.5 when i redline. the tables in my fmu for boost injection n rpm injection are they both for the additional injectors? secondly an increase in time,T, in ms would mean the longer the injectors will remain open or vice versa. i checked my ecu # n its a PLC . should i increase the injector time or decrease for better performance. i know this is way to hard to tune without a dyno but since there arent ny here i dont have a choice. need some feedback, thanx in advance

 
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8. ACYC=17 , T=1.8MS
turn this down to -.8

 
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also get a missing link

 
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i am glad yall know what the hell he is talking about....

 
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well i put a resistor in the map sensor wiring n removed the map management unit ( black box ) n kept the additional injectors n their fmu intact . i drove the car n there was no cel n it went smooth. played a bit with the fmu settings n the car is a lot better now with smoother transitions n just a rare amount of sputtering. now i can feel that 6 psi coming out of the turbo now. i guess it was the map unit which was screwing it all up, anyways ill remove the resistor n put in a check valve n further fine tune the car. in future i plan 2 install rsx injectors n tune them with the safc.
i thank ull for the feedback n will update ull on the ride n im open to all opinions n tips.
thanx