hey guys i have r33 4 door gts25t and i hae just had it tuned, i had a massive power drop in my boost when i tryed to run 18 pounds boost topping out on 219kw the chart showed that i had a massive boost drop from 18 and back to 13 pounds and we dont no what is happening.
the car did a good run on just 10 pounds running 200kw with no boost curve so it was werid that it did the boost drop after adding boost.
the car should of made more power as i have the following up grades
t04 high flowed turbo
walbro 255lph fuel pump
z32 airflow meter
metal intake pipe
yellow jacket coil packs
spark plugs gapped to .8
e boost street boost controller
555cc sard injectors
turbosmart 440 fpr fuel pressure reg
3 inch dump pipe
3 inch stainless exhaust with high flow cat
fmic
apexi power fc with controler
xtra heavy duty brass button clutch
what could this issue be was hoping for 270rwkw but massive let down if anyone knows what it could be please let me know cheers