wrxtasy

[QUOTE=Andy.F]Suhail - Is your 93octane r+m/2 rating or 93 ron ? If the latter then you should be safe regards torque, either way as long as you don't map in too much midrange boost and timing the box will live ok.

I couldn't say for sure Andy but i'm assuming it's 93 ron, the fuel is imported from South Africa, (bp unleaded) thats all i know and that it has a 93 rating...Andy i sent you a PM a couple of days back regarding the use of an apex-i power FC, hope to hear your veiws on that soon mate,

cheers,

suhail

wrxtasy

By the way, i sat in my mates newly imported supra TT yesterday, car was dynoed in england at 387hp at the crank and after fitting an air intake it was dynoed at 320whp in durban, i was expecting the car to be crazy fast, was quite disappointed to be honest, it juss din't seem to give me the kick my scoob does in 1st to 3rd, although 4th seemed pretty impressive, car is restricted to 112mph....( and he told me i wouldn't even get close )

DreXeL

That must be the case then as it's set to the factory marks at the moment. I'll get it looked at then. I really can't imagine what else could be causing the slow spool-up.

EMS

The AVC-S REALLY helps spool up on an STi! With "some" changes in the map it can be made even better. The small port heads do also help at low revs.

Drexel,

Do you have headers on your car?

Mark.

DreXeL

Yes, I have DR Motorsport 'GT Spec Gen II' unequal length tubular headers and up-pipe.

Andy.F

Which I believe are identical to the later Gruppe-s headers.

Andy

EMS

The GT Spec GenII is one of the best spooling manifolds I´ve seen, still a bit worse compared to the standard manifold though.

Mark.

Jay m A

iTrader: (2)

I take it the limitations of the OE headers is flow then? What HP levels can ported / non-ported OE headers flow before you need to upgrade?

Thanks

john banks

I think you can reach similar power levels at least to 400 BHP with the OEM headers, just have to run more boost to do so. Turbo is still the limiting factor above almost all else IMHO.

Andy.F

I believe some of the real quick Auzzie cars run std headers (700+ bhp)

Andy

EMS

You can run less boost with headers to achieve the same torque and power, this shows the flow is better. Standard manifold isn't bad though, spool up is better as with any aftermarket header!

Mark.

PICKLE

Just thought I'd add to this thread, seeing as it was mentioned earlier on in it, my TMI 141S (Very similar to TD05/06 hybrid) was suffering from Boost 'Creep' in my last mapping session! (creeping from 1.3bar to 1.5+ )

Have ported the wastegate now, hopefully will have cured it, so we can map it properly!

Andy.F

These need to be ported to match the engine when supplied, a bit risky buying secondhand IMO for this reason. For example if you take a hybrid turbo designed for a 2.0 running high boost and stick it on a 2.5 there will be a boost creep problem, the reverse also may apply with problems holding boost on a 2.0 using a turbo ported for a 2.5

Andy

alanbell

iTrader: (6)

gruppe s are good i have them , >> well i think so ????

new boy

i have them (v1 like you mate), ..re being good..i'll let you know saturday afty after a mutual friend has tried to solve my on going blowing uppipe....

ads and his shiny header tank!

alanbell

iTrader: (6)

ads he did mine from new and I have had no probs with them >> yet (touch wood) ads and his shiny header tank ! LoL

new boy

alan..i'm a happy bunny now!!

..and after the weekend when andy f finishes my map..even happier i hope!


ads

David MY99

Sorry for kicking up, but this has some good info.
I've just put on a TD05H20G from Deadbolt, and the wastegate starts to judder between 4000 and 4500 rpm
Reaches 1.0bar @ 2950 Rpm on a JDM 6speed and full boost around 3400 (1.4bar)

I'm running a 2.0 with forged pistons etc.
GT-spec GenII header
550 cc injectors
Bigger intakehose
Walbro
Hybrid Fmic
PFR7B spark plugs
3" invidia exhaust
Ported the inlet side off the heads.
Car was mapped by EMS on a Link ECU

Is this Surge or wastegatejudder?
And can this be fixed by putting on a heavier actuator
Or can Mark tune around this and should i leave the tuning up to him ?
The 550cc don't cope (99%IDC @ 6000rpm) so i'm now waiting for 740cc's injectors
Any comment's are welkom

Andy.F

You may be causing a problem with the bigger intake hose. How big is it ?

It's a good sign that you are maxing out 550cc injectors as they can easily flow for over 400bhp.

Andy

David MY99

Andy, tnx for your reply.
I'm not sure whether the 550's are actualy flowing that much. I've bought these from powerhousejimbo and do not know for sure which brand these are. Theere is another car running the same turbo and PE550's. EMS/Mark told me during the mapping that mine did deliver a little less, so not sure about the BHP ;-) (had to raise the masterfuel with i believe 9 point's)

The intake hose is i believe a 70mm one (oem is 63?) and fits perfectly on the TD05H20G
I have on the intakehose a Blitz SUS power induction kitt

Andy.F

The OEM hose is down to around 55mm or less at the turbo inlet, the 20G does not like a big bore feed pipe, it can cause surge at high boost in the midrange.
It only needs a short section of 50/55mm pipe right at the turbo inlet to eliminate it.
Don't be worried about restricting the airflow at this level. Even the OE inlet hose will allow over 400bhp. A 50mm pipe has over twice the area of a 34mm restrictor and they allow 300+bhp on the rally cars.

Andy

911

As a (very) novice 20g user:

Said AndyF rebuilt 20g FE fitted with a thickwall samco inlet to stock dimensions but with a 55mm 'outlet' dia to fit the turbo inlet.
Samco just fits the stock Sti v3 MAF pipework.

Everything runs very sweetly, smooth, seamless delivery, bit like the stock turbo that came off!

Apexi FC is used with Andy mapping.

The engine did have a cat 3'' sport cat in the d/p but this is now off, so expecting 1.4 bar from 3400 to 7800 ish. Engine has several external mods to it to match the 20g.

911

David MY99

Anyone has boostcreep on the 2.0 with a td05/06-20G?
I've fitted mine and with the AVC-r off i see the boost rising from 0.55bar til 1.0 bar at 6000rpm. Can't go further yet because i haven't got my 740cc's yet. But hope it won't go further as 1.2 bar at 7500 rpm.
I'll post my experience with the boostcreep beacause i can borrow some 740cc's tomorrow and find out

Also have compressor surge, but that should be fixed with a smaller intake hose.
Maybe i was better off with my modified VF34 running 380 bhp..?!

David MY99

Put on the 740cc's today and adjusted the link to the TD05/06-20G

After an few runs with pretty simple basemap without much advance and safe AFR we made a run with the AVC-r off. The thing is now that i have serious boostcreep.
The cars starts with 0.55bar at 2600 rpm and end with a 1.63bar at 7500rpm.
Don't get it why it creeps so much, so i'll have to port the wastegate i assume?
Find it hard to believe on a 2.0. Is there anything else which you can do to solve this ?
I dont want to mess with an external Wastegate unless there's no other option.

The car runs on a AFR of 11.3:1 with 1.5bar all the way but have to take my foot off the gas around 6750-7000rpm. IDC on the 740cc's is 90% so i'm making descent power i suppose

911

Now RR'd at 373 bhp.
Runs as sweet as the stock Sti v3, no issues, but some questions due to lack of current data.

Boost before the rr yesterday was:

3000 = 1 ish bar
3500 = 1.1 ish
3600 = 1.2
4000 = 1.4..............to 5500 = 1.4
6000 = 1.2
7000 = 1.2/1.1
7800 red line 1.2/1.1 bar.

I have preloaded the actuator /wastegate relationship since thinking the flap was bleeding boost off (?) and took it to the RR.
Need to look at the Commander (Apexi fc ecu) to see boost at 3/4/5/6/7/8 K rpm.

BUT, car drive fantastic which is the point rather than number chasing?

I had hoped the 20g would hold 1.4 right through, and it may be now.

Graham (911)

Andy.F

David

Where did you get your 20G ? and was it matched to your cars spec with regard to wastegate ?

Andy

Pavlo

???

robinH20MRV

hi andy,

i have just got a aps inner wing induction kit for my car, how do you think this will work with my set up?

cheers robin.

David MY99

AndyF

The 20G comes from deadbolt with an normal actuator.
you can get a stronger one, but that's a special order. I've bought the 20G true a reseller since they don't deliver directly to the netherlands. Before that i had posted the spec's of my car to deadbolt and they advised me also the td05H20G.
With the VF34 modified with bigger compressor i had no boostcreep at al

I'm running a 3" invidia exhaust with the bellmouth like scoobysport

Andy.F

I meant the wastegate porting. I don't supply them just "as they come" from deadbolt I port them differently for different specs of car.

Andy