2.5 with 20g
#1
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2.5 with 20g
Had my car remapped today, 326bhp and 319lbs/ft torque which I'm happy with.
I was told with an STi intercooler and TD05 20g, I'd see around 370bhp but my engine has done 99k so I wouldnt expect it'd last long, so I'd be prepared to go down the 2.5 route.
So
Roughly, what bhp and torque would a 2.5 bottom end with my 2.0 WRX heads, 2.5" decat exhaust and a TD05 20g?
I was told with an STi intercooler and TD05 20g, I'd see around 370bhp but my engine has done 99k so I wouldnt expect it'd last long, so I'd be prepared to go down the 2.5 route.
So
Roughly, what bhp and torque would a 2.5 bottom end with my 2.0 WRX heads, 2.5" decat exhaust and a TD05 20g?
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yup that sounds about right to me, i have two maps on mine i make around that figure with my 20G on vpower/tesco 99 and then around 400(ish) on the methanol with a higher boost lever
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What the f@ck does a 400bhp RA pull like????????? Do you need to strap your hands to the steering wheel??????? I can see me selling up and going down your route......................
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<<<<<<<< i managed this on my 2.5 with a 16g
300bhp-350lbft at the wheels
it pulls like a ******* and is pretty much lagless
top end is a bit poor mind, but i don't care about that, scoobs to me are punchy cars to sling you from one corner to the next, not big laggy motorway top speed machines
300bhp-350lbft at the wheels
it pulls like a ******* and is pretty much lagless
top end is a bit poor mind, but i don't care about that, scoobs to me are punchy cars to sling you from one corner to the next, not big laggy motorway top speed machines
Last edited by StickyMicky; 06 February 2009 at 10:47 PM.
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price wise for the amount of difference in performance between the 20G and the 321 ill be going with another 20G, granted the 321 has an etrar 30BHP but theres not alot in it with regards to spool maybe a few hundred rpm, is it worth all the extra £££?
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Andy.F mapped two car`s up my neck of the woods a while back, similar cars a Type R and a Type RA both with similar mods as well, here`s his thoughts
To me untill the 321H comes down to a similar price range as the 20G its not worth it
Originally posted by Andy.F:
[QB] I still don't find the 321H more responsive than the 20G. I just done one of each on very similar cars yesterday and although I agree its capable of 20-30bhp up top, it was between 150 and 200 rpm later spooling and no quicker (perhaps slightly slower) to boost between gears.
The figures were
20G 1bar @2900 1.5@3200
321H 1bar @3100 1.5@3350
(non AVCS cars)
Andy [/QB]
[QB] I still don't find the 321H more responsive than the 20G. I just done one of each on very similar cars yesterday and although I agree its capable of 20-30bhp up top, it was between 150 and 200 rpm later spooling and no quicker (perhaps slightly slower) to boost between gears.
The figures were
20G 1bar @2900 1.5@3200
321H 1bar @3100 1.5@3350
(non AVCS cars)
Andy [/QB]
#14
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On my 2.5 AVCS engine I'm getting 380/380 on the Zen RR with a TD05/20g.
1 bar is at about 2600 rpm and 1.45 just before 3000 rpm.
Power delivery is a straight line to the rev limit
<<<<<----- see my Plus Profile
If the target is isn't into the 400 plus area then the 20g seems to offer more VFM than a 321.
Nick
1 bar is at about 2600 rpm and 1.45 just before 3000 rpm.
Power delivery is a straight line to the rev limit
<<<<<----- see my Plus Profile
If the target is isn't into the 400 plus area then the 20g seems to offer more VFM than a 321.
Nick
Last edited by Butty; 07 February 2009 at 09:21 AM.
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I think both the 20g and 321H are value for money if your mods can support them. At these power levels the difference in price are about £400 and the difference in power is about 30HP, so £400 for 30HP isn't bad returns at the 400HP mark.
Those with cars with a TD05 as OE can get the 20g on exchange which does represent VFM compered to the 321H.
And of course if your car can support 450 HP then if you were going the 321H route, you can have an extra 40-50HP more for no exrta expense with the 321T, the only compromise being spool
Those with cars with a TD05 as OE can get the 20g on exchange which does represent VFM compered to the 321H.
And of course if your car can support 450 HP then if you were going the 321H route, you can have an extra 40-50HP more for no exrta expense with the 321T, the only compromise being spool
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On my 2.5 AVCS engine I'm getting 380/380 on the Zen RR with a TD05/20g.
1 bar is at about 2600 rpm and 1.45 just before 3000 rpm.
Power delivery is a straight line to the rev limit
<<<<<----- see my Plus Profile
If the target is isn't into the 400 plus area then the 20g seems to offer more VFM than a 321.
Nick
1 bar is at about 2600 rpm and 1.45 just before 3000 rpm.
Power delivery is a straight line to the rev limit
<<<<<----- see my Plus Profile
If the target is isn't into the 400 plus area then the 20g seems to offer more VFM than a 321.
Nick
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#20
so what can definatly be achieved in power terms from the 20g? (without meth) and on stock internals
Would love to have more punch through the revs but was advised that the standard turbo is pretty punchy till 400lbs torque
Would love to have more punch through the revs but was advised that the standard turbo is pretty punchy till 400lbs torque
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if you can make 400lb/ft of torque with the standard turbo why change it?
on a 2.5 your probably looking at 370/380BHP and around 400LB/FT
on a 2.5 your probably looking at 370/380BHP and around 400LB/FT
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The 321 looks great for the 400-500 area and Duncans info looks like it has better spool - so long as a std bottom end and basic mods can allow it.
If I had plans to make another step then I'd have had a 321 for now and run it in a detuned state.
nick
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RA Dunk, is yours a 2.5?
I'm putting a 2.5 with a 20g in my type r (as soon as my 20g turns up)
It's a stock 2.5 sti bottom end (with cast pistons) cometic HG's, ARP studs and P1 heads with 20g and modified injectors. It'd be interesting to see what people are getting with a similar setup.
I realise the pistons are the limiting factor at the moment but I've spent way too much already!
I'm putting a 2.5 with a 20g in my type r (as soon as my 20g turns up)
It's a stock 2.5 sti bottom end (with cast pistons) cometic HG's, ARP studs and P1 heads with 20g and modified injectors. It'd be interesting to see what people are getting with a similar setup.
I realise the pistons are the limiting factor at the moment but I've spent way too much already!
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RA Dunk, is yours a 2.5?
I'm putting a 2.5 with a 20g in my type r (as soon as my 20g turns up)
It's a stock 2.5 sti bottom end (with cast pistons) cometic HG's, ARP studs and P1 heads with 20g and modified injectors. It'd be interesting to see what people are getting with a similar setup.
I realise the pistons are the limiting factor at the moment but I've spent way too much already!
I'm putting a 2.5 with a 20g in my type r (as soon as my 20g turns up)
It's a stock 2.5 sti bottom end (with cast pistons) cometic HG's, ARP studs and P1 heads with 20g and modified injectors. It'd be interesting to see what people are getting with a similar setup.
I realise the pistons are the limiting factor at the moment but I've spent way too much already!
#27
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std 2.5 (new age sti) has cast pistons unfortunately. The rods and crank are stronger than classics though as far as I'm aware.
I was tempted to go for pistons but I bought the engine built up and it would have been another £700 or so (probably end up more) to fit forged pistons once I'd bought new gaskets and cambelt etc.
I'll be happy with over 350bhp in a type r though I reckon, I think 370bhp-380bhp is supposed to be safe on that bottom end and that would be great.
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I should mention that with the stock 2.5 pistons, you seam to be limited a little bit to how much boost you can run.
some people say 1.6bar is ok, some say 1.5bar is the limit, some say 1.65bar is crazy, etc etc
some people say 1.6bar is ok, some say 1.5bar is the limit, some say 1.65bar is crazy, etc etc