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 |
I ran 1.8 on md321t on 55plate sti made 431bhp
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Thanks for the reply, was this on standard ecu on v-power?
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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 |
got a 3port on it?
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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?
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Originally Posted by Tidgy
(Post 11753716)
got a 3port on it?
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Avcr has a 3 port solenoid and different map sensor
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Is the standard ecu boost not 1.65bar max without avcr
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I'm not sure, I think I'm might be at my boost limit?
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im on the factory map sensor btw
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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
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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 |
What torque did it make
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375
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Mine was 385 no much in that then
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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? |
I have checked for any leaks and seems to be ok, does it look laggy to you?
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Originally Posted by peter zippy reid
(Post 11753720)
Is the standard ecu boost not 1.65bar max without avcr
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Does seem not many have hit 450 on a 2.0l using v-power
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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
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are there any better turbo options to make the 450bhp more easy
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From a guy who chased 450bhp on my last two cars why do you want 450bhp instead of say 420bhp from say sc42
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And i still never got the 450 and sold both cars
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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. |
If your car was 2.5 you would have the 450bhp
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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. |
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
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What about the sc46 is that the md321t equal?
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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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