What turbo upgrade?
#1
Scooby Regular
Thread Starter
iTrader: (2)
Join Date: Mar 2013
Location: Manchester
Posts: 726
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
I have a 2002 WRX at the moment that came with the PPP.
Im looking at a turbo upgrade, STi intercooler, Decat down pipe with STi up pipe, Possibly injectors as well.
Just wondering what turbo is recomended?
My driving style isnt aggressive so ideally want it to boost low down to make it a nippy road car rather than top end speed.
Im looking at a turbo upgrade, STi intercooler, Decat down pipe with STi up pipe, Possibly injectors as well.
Just wondering what turbo is recomended?
My driving style isnt aggressive so ideally want it to boost low down to make it a nippy road car rather than top end speed.
#2
Scooby Regular
iTrader: (6)
Join Date: Apr 2005
Location: Stroke it baby!
Posts: 33,828
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
I have a 2002 WRX at the moment that came with the PPP.
Im looking at a turbo upgrade, STi intercooler, Decat down pipe with STi up pipe, Possibly injectors as well.
Just wondering what turbo is recomended?
My driving style isnt aggressive so ideally want it to boost low down to make it a nippy road car rather than top end speed.
Im looking at a turbo upgrade, STi intercooler, Decat down pipe with STi up pipe, Possibly injectors as well.
Just wondering what turbo is recomended?
My driving style isnt aggressive so ideally want it to boost low down to make it a nippy road car rather than top end speed.
You'll need injectors as your wrx ones will max out around 300, most people fit either a VF35/34 or TD05 16g as a first turbo upgrade on a wrx. Much more than that and your gearbox is at risk.
#3
Scooby Regular
Thread Starter
iTrader: (2)
Join Date: Mar 2013
Location: Manchester
Posts: 726
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
From what I have read up on the VF series and TD05 they have quite a bit of lag.
Ideally I want boost to come in around the same or even lower than my standard TD04 does.
Thinking going down hybrid route but if there is a turbo "off the shelf" that can get similar results then I would be happier.
Ideally I want boost to come in around the same or even lower than my standard TD04 does.
Thinking going down hybrid route but if there is a turbo "off the shelf" that can get similar results then I would be happier.
#7
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
I can imagine with those mods the initial spool up of the turbo might be increased but you'll still lack midrange grunt and top end. The turbo will be the limiting factor I reckon. maybe not though, will the uppipe and downpipe increase midrange and top end?
Trending Topics
#8
Scooby Regular
iTrader: (1)
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
Uppipe will reduce spool even further and the downpipe helps throughout the whole rev range.
"My driving style isnt aggressive so ideally want it to boost low down to make it a nippy road car rather than top end speed."
A bigger turbo will improve torque and power in the mid to high range, at the expense of spool and low rpm grunt. So a bigger turbo may go against what the OP wants. Standard PPP is probably only about 250bhp and not much more torque. By fitting a free flow exhausts, removing 2 of the CATS and having a custom map, you can see more like 280bhp and 300lbsft, whilst not sacrificing any spool. Obviously you still run out of puff at 5.5k but that sounds more like what the OP is after.
Have a look at some of the maps:
PPP v Custom
http://www.racedynamix.co.uk/remap/p...us-custom-map/
TD04 custom
http://www.racedynamix.co.uk/remap/s...p-impreza-wrx/
TD04 custom
http://www.racedynamix.co.uk/remap/2...4-impreza-wrx/
With VF35, full decat, etc
http://www.racedynamix.co.uk/remap/2...x-358-9-bhp-2/
Sure, the last one is making a lot higher bhp because it is able to make power past 6.5k but look at the torque curve to get an idea of how it drives. It makes 300lbsft 700rpm later than the TD04 cars.
At 3.5k it's barely making 200lbsft whereas the TD04 are 100 (50%) lbsft higher at 300lbsft at the same rpm. So a TD04 may be better option for the OP than a bigger turbo. A hybrid TD04 may give you the best of both worlds but it's very difficult to find dyno figures for them. It's something I'm considering but I expect improvements of maybe 5-10% throughout the rev range, with a little more top end without increasing the spool noticeably.
It's of course a considerable additional expense when a stock TD04 may suffice.
"My driving style isnt aggressive so ideally want it to boost low down to make it a nippy road car rather than top end speed."
A bigger turbo will improve torque and power in the mid to high range, at the expense of spool and low rpm grunt. So a bigger turbo may go against what the OP wants. Standard PPP is probably only about 250bhp and not much more torque. By fitting a free flow exhausts, removing 2 of the CATS and having a custom map, you can see more like 280bhp and 300lbsft, whilst not sacrificing any spool. Obviously you still run out of puff at 5.5k but that sounds more like what the OP is after.
Have a look at some of the maps:
PPP v Custom
http://www.racedynamix.co.uk/remap/p...us-custom-map/
TD04 custom
http://www.racedynamix.co.uk/remap/s...p-impreza-wrx/
TD04 custom
http://www.racedynamix.co.uk/remap/2...4-impreza-wrx/
With VF35, full decat, etc
http://www.racedynamix.co.uk/remap/2...x-358-9-bhp-2/
Sure, the last one is making a lot higher bhp because it is able to make power past 6.5k but look at the torque curve to get an idea of how it drives. It makes 300lbsft 700rpm later than the TD04 cars.
At 3.5k it's barely making 200lbsft whereas the TD04 are 100 (50%) lbsft higher at 300lbsft at the same rpm. So a TD04 may be better option for the OP than a bigger turbo. A hybrid TD04 may give you the best of both worlds but it's very difficult to find dyno figures for them. It's something I'm considering but I expect improvements of maybe 5-10% throughout the rev range, with a little more top end without increasing the spool noticeably.
It's of course a considerable additional expense when a stock TD04 may suffice.
#9
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
Uppipe will reduce spool even further and the downpipe helps throughout the whole rev range.
"My driving style isnt aggressive so ideally want it to boost low down to make it a nippy road car rather than top end speed."
A bigger turbo will improve torque and power in the mid to high range, at the expense of spool and low rpm grunt. So a bigger turbo may go against what the OP wants. Standard PPP is probably only about 250bhp and not much more torque. By fitting a free flow exhausts, removing 2 of the CATS and having a custom map, you can see more like 280bhp and 300lbsft, whilst not sacrificing any spool. Obviously you still run out of puff at 5.5k but that sounds more like what the OP is after.
Have a look at some of the maps:
PPP v Custom
http://www.racedynamix.co.uk/remap/p...us-custom-map/
TD04 custom
http://www.racedynamix.co.uk/remap/s...p-impreza-wrx/
TD04 custom
http://www.racedynamix.co.uk/remap/2...4-impreza-wrx/
With VF35, full decat, etc
http://www.racedynamix.co.uk/remap/2...x-358-9-bhp-2/
Sure, the last one is making a lot higher bhp because it is able to make power past 6.5k but look at the torque curve to get an idea of how it drives. It makes 300lbsft 700rpm later than the TD04 cars.
At 3.5k it's barely making 200lbsft whereas the TD04 are 100 (50%) lbsft higher at 300lbsft at the same rpm. So a TD04 may be better option for the OP than a bigger turbo. A hybrid TD04 may give you the best of both worlds but it's very difficult to find dyno figures for them. It's something I'm considering but I expect improvements of maybe 5-10% throughout the rev range, with a little more top end without increasing the spool noticeably.
It's of course a considerable additional expense when a stock TD04 may suffice.
"My driving style isnt aggressive so ideally want it to boost low down to make it a nippy road car rather than top end speed."
A bigger turbo will improve torque and power in the mid to high range, at the expense of spool and low rpm grunt. So a bigger turbo may go against what the OP wants. Standard PPP is probably only about 250bhp and not much more torque. By fitting a free flow exhausts, removing 2 of the CATS and having a custom map, you can see more like 280bhp and 300lbsft, whilst not sacrificing any spool. Obviously you still run out of puff at 5.5k but that sounds more like what the OP is after.
Have a look at some of the maps:
PPP v Custom
http://www.racedynamix.co.uk/remap/p...us-custom-map/
TD04 custom
http://www.racedynamix.co.uk/remap/s...p-impreza-wrx/
TD04 custom
http://www.racedynamix.co.uk/remap/2...4-impreza-wrx/
With VF35, full decat, etc
http://www.racedynamix.co.uk/remap/2...x-358-9-bhp-2/
Sure, the last one is making a lot higher bhp because it is able to make power past 6.5k but look at the torque curve to get an idea of how it drives. It makes 300lbsft 700rpm later than the TD04 cars.
At 3.5k it's barely making 200lbsft whereas the TD04 are 100 (50%) lbsft higher at 300lbsft at the same rpm. So a TD04 may be better option for the OP than a bigger turbo. A hybrid TD04 may give you the best of both worlds but it's very difficult to find dyno figures for them. It's something I'm considering but I expect improvements of maybe 5-10% throughout the rev range, with a little more top end without increasing the spool noticeably.
It's of course a considerable additional expense when a stock TD04 may suffice.
#11
Scooby Regular
iTrader: (1)
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
You won't make 300bhp with a TD04 (or rather, it's very unlikely without an optimistic dyno). Increasing the boost will just generate heat. You need a bigger turbo or hybrid for those numbers. 280-290 on a TD04. Are you actually going to notice another 10bhp or so at 5.5k? If it's a weekend or track car, then it's an easy decision to go to a bigger turbo as you are more likely to be driving hard and less likely to be be pootling about amongst other road traffic.
If it's your daily driver, then it's a harder choice to make over sacrificing response, low-down torque and flexibility, in order to chase a "number".
Maybe have a dyno run first and see what numbers you are pulling? It's the law of diminishing returns. The biggest hindrance to power on a WRX TD04 are the CATS in the downpipe and fuelling. Sports CAt, second CAT delete, Fuel Pump and filter should see 270+ with a remap. That's up from 220+ stock. You can then add an uppipe, port and wrap the manifolds, colder plugs, injectors, STi TMIC etc which will all help a little with either power or spool but none of them will have as great an impact as the decat, pump and remap. More air in/out, increased boost, more fuel.
If it's your daily driver, then it's a harder choice to make over sacrificing response, low-down torque and flexibility, in order to chase a "number".
Maybe have a dyno run first and see what numbers you are pulling? It's the law of diminishing returns. The biggest hindrance to power on a WRX TD04 are the CATS in the downpipe and fuelling. Sports CAt, second CAT delete, Fuel Pump and filter should see 270+ with a remap. That's up from 220+ stock. You can then add an uppipe, port and wrap the manifolds, colder plugs, injectors, STi TMIC etc which will all help a little with either power or spool but none of them will have as great an impact as the decat, pump and remap. More air in/out, increased boost, more fuel.
Last edited by TECHNOPUG; 29 November 2016 at 10:20 AM.
#13
Scooby Regular
Join Date: Oct 2016
Location: Pinching one out
Posts: 561
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
![Lol1](https://www.scoobynet.com/images/smilies/lol1.gif)
![Lol1](https://www.scoobynet.com/images/smilies/lol1.gif)
![Lol1](https://www.scoobynet.com/images/smilies/lol1.gif)
#16
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
hybrid is the route imo
fitted the bigger turbos and its just laggy, the hybrid td04 is the best of both worlds,
according to my mapper my hybrid td04 was macthing my vf34 up till around 5.5k, but came in nearly 900rpm earlier
jake
fitted the bigger turbos and its just laggy, the hybrid td04 is the best of both worlds,
according to my mapper my hybrid td04 was macthing my vf34 up till around 5.5k, but came in nearly 900rpm earlier
jake
#17
Scooby Regular
Join Date: Oct 2016
Location: Pinching one out
Posts: 561
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
![Thumb](https://www.scoobynet.com/images/smilies/thumb.gif)
All joking aside, got a dyno graph?
#19
Scooby Regular
Join Date: Oct 2016
Location: Pinching one out
Posts: 561
Likes: 0
Received 0 Likes
on
0 Posts
#20
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
i didnt say that, i said the hybrid matched the vf up untill 5.5 then it tails off were the vf carries on,
btw whats the point in driving out of the power band out of interest?
#24
Scooby Regular
Join Date: Oct 2016
Location: Pinching one out
Posts: 561
Likes: 0
Received 0 Likes
on
0 Posts