chasey

iTrader: (2)

Has anyone any experience with this turbo
APT GT3582R standard location non rotated. 76mm inlet
http://www.atpturbo.com/mm5/merchant...egory_Code=SUB

Ive had it on my classic which has had a 2.5 conversion and supporting mods, but it seems to be laggy. It doesnt really boost until 4000rpm which is great for motorways as i can cruise at 80mph with no boost. I fitted a Harvey uppipe which i thought might help as i knew it would be kinda laggy for it being such a big turbo.
Ive not had it dyno`d yet but the car is around 400bhp (running 1.7Bar) and pulls really well, its just the lag how do i improve it or what can be done to make it alittle more quicker on the spool.

MattyB1983

iTrader: (51)

Drop down a gear before giving it the beans.

wrx271

iTrader: (1)

I'm not sure but 1.7bar isn't that excessive for wot it's running not only that but after you fit the up pipe did u have the map tweaked

chasey

iTrader: (2)

Yeah it was mapped with the up pipe on, it's fast just not off the line. 1.7bar was max boost as the block isn't pinned. I was thinking about AVCS heads but it's a lot off effort and money for a few hundred rpm. Didn't know if a billet wheel would improve it, or selling it and get a MD T or V.

MattyB1983

iTrader: (51)

The turbo is too big for a 400bhp car. You need the smallest turbo capable of meeting your power goal. Just sell it and go with a 321t or sc series turbo.

banny sti

iTrader: (68)

A standard position GT35 is a poor turbo and never really works well, as mentioned above go for something tried and tested

scooby2.5maz

iTrader: (16)

I'm running a spec d Sti with a forged block with an mdx321v !! Standard top mount at 1.4 bar makes 428 bhp

toyney83

iTrader: (3)

Gt35 is to big for what you want Jim. An sc46 would go well on a built 2.5. If your looking for about 400 horses then maybe an sc42 would be a good bet. If I were you though I'd go mdx321t, mapped at 1.7b and you should see 440-450bhp

jura11

iTrader: (7)

As above guys said,MDX321T or V should be better option,standard location GT35R will never work as rotated 35R

Jura

honeybadger

Jura, that car of yours is STRONG man! well done.

I have a Blouch Dominator 5 turbo (bolt on GT35R) . What's this? Why does it say that in brackets? I bought the car from a friend 2 months ago....

chasey

iTrader: (2)

Thanks for the advice md t it is after Christmas

jura11

iTrader: (7)

Thanks there

Blouch Dominator 5.0XT-R is probably based on 35R,I would suspect this turbo must be used only with external wastegate(internal wastegate is missing)

What I've seen those turbo on few US cars,they usually making 420-450WHP,which is around 550bhp over here

I would go everytime with T or V over this turbo,if its on 2.5L and have AVCS then SC46 will be good too there

Jura

honeybadger

ok, thanks Jura.