Polished or un-polished turbo?

Brett · December 04, 2008, 08:20:31 PM

Here\'s the dyno from my Graphite TII. This was prior to getting the ECU done, 0.9bar, FCD, boost controller, 3" exhaust system, panel filter :driving
I miss this car

TiddlesRX7 · December 04, 2008, 08:28:11 PM

Yeah you deffo can get over 250bhp fairly easily and with relative safety. I should be doing around 260-270 when I get my fueling sorted. Hoping to get an Apexi PFC soon!

shaunwil · December 04, 2008, 09:18:44 PM

Loving the sound of the FC

Shaun

m1tch · December 04, 2008, 09:22:30 PM

What kind of mods are you running to get that out of the stock turbo?

m1tch · December 04, 2008, 09:55:59 PM

I can\'t go above stock boost as I have stock fueling, what cc injectors were you running for the 250bhp?

TiddlesRX7 · December 04, 2008, 10:00:28 PM

Surely with a full de-cat exhaust system, a decent air intake, FCD and a chipped ecu you\'d be seeing 250bhp without turning the boost up.

TiddlesRX7 · December 04, 2008, 10:05:52 PM

Saying that I think most chipped ecu\'s up the boost to 0.8-0.9 bar.

m1tch · December 04, 2008, 10:16:47 PM

Mines running on what I think is stock, but might be chipped ECU as it has no fuel cut or rev limiter lol

I will probably be running 1000cc injectors and a e-manage ultimate by the time I get the turbo fitted, I prefer to uprate things so that they aren\'t maxxed out meaning more reliability so I won\'t be thrashing my stock turbo, stock boost is all I will push it to.

My car has a decent air intake, full decat, walbro 255lph fuel pump and a ARC copy intercooler and its making 210bhp, Charlie over at the Surrey Rolling road also has an FC that hes got for the track, he says that on a stock turbo you can\'t get much more than about 220 with a chipped ECU

Brett · December 04, 2008, 11:09:10 PM

Running stock pump and injectors, FCD, 3" zorst & panel filter. Boost controller set for 0.9bar. Had an aftermarket BOV too.

If you are talking RWHP then 210-220 is probably about right, if you are talking est flywheel BHP then its around 270 max from the stock turbo.

With the top mount you have alongside the other mods you should see 260 all day long with no problems. Out of interest, what exhaust are you running?

L18M · December 05, 2008, 01:20:49 AM

Quote from: m1tch;562345Mines running on what I think is stock, but might be chipped ECU as it has no fuel cut or rev limiter lol

I will probably be running 1000cc injectors and a e-manage ultimate by the time I get the turbo fitted, I prefer to uprate things so that they aren\'t maxxed out meaning more reliability so I won\'t be thrashing my stock turbo, stock boost is all I will push it to.

My car has a decent air intake, full decat, walbro 255lph fuel pump and a ARC copy intercooler and its making 210bhp, Charlie over at the Surrey Rolling road also has an FC that hes got for the track, he says that on a stock turbo you can\'t get much more than about 220 with a chipped ECU

talking about bigger injectors.. cant the 1000cc injectors fit into stock holes? or do u need aftermarket parts to fit 1000cc injectors?

would it be better to have 2 additional injectors instead of changing to 1000cc ones..?

looks like me, m1tch and adereed will have similar beasts once we done with modding :Giggle
tho feels like a race between me n adereed to who can find a pfc first :3gears-lh

L18M · December 05, 2008, 01:22:21 AM

Quote from: Brett;562368Running stock pump and injectors, FCD, 3" zorst & panel filter. Boost controller set for 0.9bar. Had an aftermarket BOV too.

If you are talking RWHP then 210-220 is probably about right, if you are talking est flywheel BHP then its around 270 max from the stock turbo.

With the top mount you have alongside the other mods you should see 260 all day long with no problems. Out of interest, what exhaust are you running?

if you have front mount would that giv a higher figure..? or jus means more lag..?

Brett · December 05, 2008, 08:43:11 AM

M1tch has an ARC type top mount IIRC, these are almost double the volume of the stock top mount, therefore you should be able to see much better flow through the cooler. Therefore you can run the turbo at a slightly lower boost level and see the same power at the wheels. (Been about 2 years since I did the equations on this, so I can\'t give you the exact numbers I was working from)

A front mount will give you a cooler charge with longer pipe runs, a top mount can suffer from local heat induction, but this can be reduced by fitting some heat shielding and a cooling spray or WI.

:wave

Brett · December 05, 2008, 08:46:29 AM

Quote from: adereed;562334Surely with a full de-cat exhaust system, a decent air intake, FCD and a chipped ecu you\'d be seeing 250bhp without turning the boost up.

If you fully DCAT a TII then the lack of back pressure will double the boost anyway - hence the need for an FCD. (and ideally some sort of boost controller)

m1tch · December 05, 2008, 10:44:21 AM

Quote from: Brett;562409M1tch has an ARC type top mount IIRC, these are almost double the volume of the stock top mount, therefore you should be able to see much better flow through the cooler. Therefore you can run the turbo at a slightly lower boost level and see the same power at the wheels. (Been about 2 years since I did the equations on this, so I can\'t give you the exact numbers I was working from)

A front mount will give you a cooler charge with longer pipe runs, a top mount can suffer from local heat induction, but this can be reduced by fitting some heat shielding and a cooling spray or WI.

:wave

I will be running a cryogenics system soonish, just need to sort out the exhaust, its a custom 1 piece exhaust that has been on there for about a decade, not sure about the OD of the pipes, but they don\'t look that big. The problem being is that I would need a new downpipe to fit the larger turbo, but I need a new ECU and injectors as well as relocating the air pump to fit the new turbo. It looks like I am going to change the exhaust in 2 stages and get someone to weld a 3" flange onto the back of the current midbox so it will be current turbo to midbox and then 3" from midbox back, this means that I can just change the downpipe and midbox to a 3" system when I change the turbo.

The problem being is the fact that my engine is currently on stock ports, so spooling a 1.15ar hot side might be an issue, which is why I might not be changing the turbo for a while lol

If I were to get a boost controller and put it to 0.6bar (which is the stock ECU limit) would the fueling be ok with that? I need to get myself a wideband O2 sensor and a A/F guage first though, I already have a nice racetech boost guage so thats sorted for the boost.

This is my goal for my FC:

400bhp @ max 1.2bar (preferably with flames like it does at the mo on the dyno)

Another note on top mounts, the ARC cooler takes longer for heat soak to take affect and as soon as you start moving the temp drops rapidly (Prof has the same one and he has air temp sensors showing this)

I would prefer a V mount due to the shorter pipe lenghts but the top mount has NO lag lol especially coupled to the Greddy compression tube, im literally on boost as soon as I touch the throttle at any revs lol

Brett · December 05, 2008, 10:59:16 AM

The stock fuel system should handle 0.6bar with no problems, the FC tends to be very rich as standard in order for the reburning system to work correctly :yes

My advice would be to ensure you have double checked the loom that is powering your fuel pump - FC\'s are notorious for fuel pump power supply issues as the loom ages. Quite often its just a dodgy earth, but check it anyone! :wave