R33 0wnerrr

Iv brought a power fc, and I have a bosch pump, going to get my injectors high flowed and have a z32 afm lying around, and my hks evc so looking to get it all put in and dyno tuned But i dont want to have to go back wanting more power, so am wondering what would produce more power...tuned turbo i have now or the big one put back on, because i cant really afford to buy another turbo.... but i might have to i guess

Well.... I brought my r33 rb25det with this insanely big turbo already on the car....looks like a gt35 front but the exhaust housing of it is huge and when i would drive the car it would lag and in first gear kick in at about 6k revs, and 2nd like 5500, but when it kicked in it would sit me back in my seat on stock 7psi, BUT i recently brought a new DSR 430 turbo, and then raised the boost up to 10psi, it spools up at about 3k and i get full boost by about 4-4500revs But even though i raised the boost and its hitting boost for longer in the rev range....its actually going slower then the old turbo. The old big turbo i had i would be doing about 60 before changing into 2nd and about 100 at the end of 2nd, and it was on stock 7psi but with this dsr turbo i get to about 50kph in 1st and about 90 in 2nd gear... on 10psi The DSR turbo keeps power through all the way to redline aswell, So is this becuase the DSR430 turbo i brought a piece of chinese crap? or do i need a really decent tune? or a high quality turbo such as a garretgt30 or somthing? Thanks guys!

wow...just wow...

I brought this car with the bigger turbo installed already, so your saying because the cars running rich to boost then lean onwards and the general tune being so out that your surprised my motor hasn’t blown? Yes I am new to this... and iv got to start somewhere though, just need to brush up on my ecu knowledge.... Basicly running bigger turbo, is what you need the new ECU for it to be able to be tuned properly to run right? does this count for any new turbo? or all aftermarket parts in general? If like the post above said, that I get a stock rb25 turbo and swap it, can I dyno on the stock ecu I have now? or is that not recommended? Thanks for your help guys...I appreciate it heaps

Ok well i didnt know you cant dyno tune it in this situation with the standard ecu.... So i pretty much need a new ecu... a piggyback or pref a stand alone? what about getting the standard ecu remaped? i was hopeing for a cheaper fix, guess not! Oh and how do i tell if my wastegate is leaking? Oh and will this be doing any harm to my car meanwhile?

thanks for your replys, Its got the standard ECU... and yea it is in need of a tune.... it back fires alot during gear change, and when i turn it on in when its cold it seems to missfire/be out of time for a while untill its warm when its idleing,\ It seems to be running rich, but when i pulled the spark plugs out it doesnt seem so, but it back fires alot The car itself runs fine tho...goes along nicely, im not sure if its sluggish getting to high revs or not because ive got nothing to compare it to but u definetly feel the turbo kick in when it does, I didnt install the new turbo so maybe it didnt get tuned? Would a dyno tune fix this? and bring the boost in sooner? or do i need a piggyback or power fc etc?

Hey guys, Ok im not sure about this so i thought id ask, Iv got a T3T4 turbo on my rb25det r33....its at 7psi at the moment... but the boost only kicks in really late in the rev range at like 6000rpm, espically in first gear, So i was wondering if I brought a boost controller, would this effect what rev range the boost kicks in depending on what psi im running the turbo at? if i lowered or raised it? Or is it my setup im running? The mods i have to the car at the moment are the turbo, front intercooler, 38mm ext.wastegate, screamer pipe, ssqv bov on the hotpipe, full 3"exhaust and other stuff i dont think relates tho I really just want a simple way to make it boost lower in the rev range if possible? Thanks for looking guys...my first skyline so am learning!..loving it tho..dont know why i ever had a subaru legacy in the past haha