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-   -   Only 403bhp on md321t (https://www.scoobynet.com/engine-management-and-ecu-remapping-453/1031196-only-403bhp-on-md321t.html)

Wr1253 26 October 2015 07:59 PM

Only 403bhp on md321t
 
Hi, I need some help in reaching 450bhp on my 04 sti wr1. I've been mapped and dyno at 403bhp at 1.6bar of boost using a MD321T billet turbo with all the supporting mods:

Rcm headers
750cc injectors
Fuel lab fpr
Perrin intake
Rcm turbo back exhaust
Japsppeed fmic
Remap jgm

Do I need to run more boost pressure? Any help would be appreciated

peter zippy reid 26 October 2015 08:02 PM

I ran 1.8 on md321t on 55plate sti made 431bhp

Wr1253 26 October 2015 08:09 PM

Thanks for the reply, was this on standard ecu on v-power?

peter zippy reid 26 October 2015 08:12 PM

Standard ecu but with apexi avcr wired it to get the 1.8bar and v-power
650 injectors
Hdi fmic
Fuel pressure regulator
Was really laggy on my 2.0l

Tidgy 26 October 2015 08:14 PM

got a 3port on it?

Wr1253 26 October 2015 08:16 PM

Yeah mine needs to be around 4500rpm before she takes off. Does fitting the avcr get round a problem to do with the stock map sensor?

Wr1253 26 October 2015 08:17 PM


Originally Posted by Tidgy (Post 11753716)
got a 3port on it?

Yeah it has 3-port solenoid

peter zippy reid 26 October 2015 08:19 PM

Avcr has a 3 port solenoid and different map sensor

peter zippy reid 26 October 2015 08:20 PM

Is the standard ecu boost not 1.65bar max without avcr

Wr1253 26 October 2015 08:23 PM

I'm not sure, I think I'm might be at my boost limit?

Wr1253 26 October 2015 08:24 PM

im on the factory map sensor btw

peter zippy reid 26 October 2015 08:26 PM

Even with avcr you will struggle to get 450bhp out the md321t on 2.0l im sure theres a thread here about not getting 450 out 2.0l

Wr1253 26 October 2015 08:29 PM

thanks I'll search for that thread, I'm still 30hp behind you, might see if I can get the boost raised
https://cimg6.ibsrv.net/gimg/www.sco...2c706e0d4.jpeg


My graph

peter zippy reid 26 October 2015 08:31 PM

What torque did it make

Wr1253 26 October 2015 08:35 PM

375

peter zippy reid 26 October 2015 08:36 PM

Mine was 385 no much in that then

just me 26 October 2015 08:41 PM

When I had my 321t mapped Andy F recommended to stay on standard ported headers, mine made 412lbft, and 409bhp, have bought a decat downpipe now so hoping for more.

Have you checked for an exhaust leak?

Wr1253 26 October 2015 08:45 PM

I have checked for any leaks and seems to be ok, does it look laggy to you?

Tidgy 26 October 2015 08:47 PM


Originally Posted by peter zippy reid (Post 11753720)
Is the standard ecu boost not 1.65bar max without avcr

max it can see

Wr1253 26 October 2015 08:47 PM

Does seem not many have hit 450 on a 2.0l using v-power

bustaMOVEs 26 October 2015 08:56 PM

More suited to a 2.5 tbh I think that's where the numbers seem to hit. Hence the lag and needing more boost to get there

Wr1253 26 October 2015 09:01 PM

are there any better turbo options to make the 450bhp more easy

peter zippy reid 26 October 2015 09:06 PM

From a guy who chased 450bhp on my last two cars why do you want 450bhp instead of say 420bhp from say sc42

peter zippy reid 26 October 2015 09:07 PM

And i still never got the 450 and sold both cars

Wr1253 26 October 2015 09:12 PM

I guess because I've got a 450bhp turbo fitted and I'm making 47bhp less than what it should. I believe it will feel a lot more aggressive with an extra 47bhp.

If they only make around 420 then I might as well fit a smaller 400bhp turbo and have less lag.

peter zippy reid 26 October 2015 09:19 PM

If your car was 2.5 you would have the 450bhp

bustaMOVEs 26 October 2015 09:24 PM

Sc42 will hit 450 with 1.8ish bar and a splash of meth I reckon 470 is achievable.
420 is only a guide but they tend to go more depending on set up.
It's what I'm going to use.

Wr1253 26 October 2015 09:25 PM

So the md321t billet is a turbo best suited to a 2.5litre, suppose I'll just have to make do till a more fruitier turbo is released

Wr1253 26 October 2015 09:29 PM

What about the sc46 is that the md321t equal?

bustaMOVEs 26 October 2015 09:32 PM

Nah sc46 is more 500+hp turbo IMO (with right spec and meth) slightly laggier than the 42 but still a good unit and will make the 450 easily on pump fuel


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