[bmwheath]

The turbo upgrades in our cars are still little turbos! Ken from Hexon had sent me a graph a while ago showing that the RR600's spool like 100rpm QUICKER than the stock turbos. I have run through this with Justin (JD75) if you would like further information.
You should not feel any real difference.
Remember that its twin turbo, and most turbos are stock framed still so its not like jumping up to a single HKS T51 or T88, though that would be nice!!

[martymil]

you wont feel any difference in the spool because even tough the turbo is spooling a little bit slower the bigger turbo will make much more power and the same rpm.

When dealing with the turbos currently available to us, the difference is minimal and anything bigger is going to be better down low than stock.

I tested the rbs I had which spool quite slow and they made roughly 30 rwk more throughout the lower rev range than stocks even though they spool slower.

[_ink]

Originally Posted by DR-JEKL

Why would you stay with the stage 2 LPFP when you have PI dude and not upgrade to stage 3 so you can run 100% E85?

I must admit mixing E50 is dead easy and you get nice smooth cold starts and barely much difference in terms of fuel economy during regular driving

The only benefit the FI Stg3 will give me is the convenience of filling up with one pump (e85) - But that doesn't impact or annoy me (yet) And there's a new fueling option in town from Boost Concepts which will be interesting to see how their new modular design will pan out (they currently have a stage 2 option out now, which i would personally choose over the FI stg2)

From a fueling and octane perspective, I'm 110% fine with where i am with my boost/power levels. I'm not at the ragged edge with either my LPFP or HPFP, so the upgrade isn't a real impending need.

Also, with e50 - the fuel gauge just disappears! You can plant it and what it move! Can't imagine how quickly e85 will disappear!

Originally Posted by JB4-335

Cause he doesn't want to spend too much money on his car.

ahaha smart

[Socket]

Originally Posted by JB4-335

Cause he doesn't want to spend too much money on his car.

Hhahahaa this

[bradsm87]

I chatted with Wayne and he's developing an off-the-shelf product the same as what I was going to have done as a custom job so I'll wait for that. In the meantime, I'll get my secondary cat delete and custom 'Mr.2' secondary intake to the factory airbox done.

[_ink]

Originally Posted by bradsm87

I chatted with Wayne and he's developing an off-the-shelf product the same as what I was going to have done as a custom job so I'll wait for that. In the meantime, I'll get my secondary cat delete and custom 'Mr.2' secondary intake to the factory airbox done.

You've got catted DP's right brad?

[bradsm87]

Originally Posted by _ink

You've got catted DP's right brad?

"I don't know. I bought it like this."

[T1M]

Originally Posted by bradsm87

I think I'm just going to go for the customs. Somebody's gotta try em so it may as well be me. 14T wheels flow 40% more than stock and only 10% less than 15T wheels and the turbine size difference is similar too. This should be ideal for what I want, which is boost as early as possible and 19psi flat to redline on E17 ethanol mix (easy for the wife to mix at the bowser with 10L jerry can of ethanol) and make around 330kw at the wheels.

You get your wife to mix e85 at the bowser using a jerry can? Tell us your secrets.

[bradsm87]

Originally Posted by einserM

You get your wife to mix e85 at the bowser using a jerry can? Tell us your secrets.

She doesn't know it yet! I'll be most likely to be allowed to run an ethanol blend if it's easy to do. I drive a work-provided Hyundai POS during the week and the wife drives the BMW.

[martymil]

If you have a jb4 just get her to run around in map 4 on 98

Then do a custom map 6 when you drive with the
a blend easier and safer

[bradsm87]

It only gets filled every 3 weeks or so. It's flash only and I'm looking forward to having a bit of ethanol in there for 1500-2000rpm around 50-65 load, where they get lots of corrections, even from factory.

[martymil]

E20 will fix that no problems

[bradsm87]

Yep and because I will be able to get timing much closer to MBT, it should get better economy, despite the ethanol content.

[martymil]

E20 will effect your economy because you won't be able to keep your foot of the accelerator lol

[bmwheath]

Just fitted bigger turbo's yesterday, no real difference in lag compared to stock. If you are replacing turbos then i would get the biggest ones you can afford.

[martymil]

Been saying the same thing all along all the stock frame hybrid turbos don't really effect lag because you will have more power at the same rpm even though your running less boost

[bradsm87]

Originally Posted by bmwheath

Just fitted bigger turbo's yesterday, no real difference in lag compared to stock. If you are replacing turbos then i would get the biggest ones you can afford.

Funny you should say that because I'm now leaning towards RR600s again. I'm so terrible at making decisions. I'll just finish my intake and exhaust, then order turbos.

What inlets are you running?

[CashedUpBogan]

You wanna wait for something Wayne is developing?
I'm one of five "beta" sets of RR700s. I paid before Christmas and they only arrived last week lol

Just get the RR600s and be done!

[bmwheath]

Seriously, if all else fails just buy a Torana

[T1M]

Originally Posted by bmwheath

The turbo upgrades in our cars are still little turbos! Ken from Hexon had sent me a graph a while ago showing that the RR600's spool like 100rpm QUICKER than the stock turbos. I have run through this with Justin (JD75) if you would like further information.
You should not feel any real difference.
Remember that its twin turbo, and most turbos are stock framed still so its not like jumping up to a single HKS T51 or T88, though that would be nice!!

Got a copy of this you can post up mate? I honestly think the stockers spool too fast then fall off too fast.

Really interested in seeing proper power and torque curves for these too. Especially on 98 pump fuel. E85 sucks for daily and after running straight pump E85 in my Evo there is no way I'm mucking around blending my own % mix lol

[Flex68]

So brad what snails are you leaning towards ?

[bradsm87]

Originally Posted by Flex68

So brad what snails are you leaning towards ?

If I had money now, I'd buy RR600s now. They've proven themselves to perform great and good points have been made regarding the fact that despite being slower to build boost at low RPM, the engine can make the same torque on less boost so the performance gap at low RPM isn't as big as the boost curve makes it look like. Having said that, I'd always be curious how responsive a smaller turbo would have been.

Every time I think I can finally get turbos, I do the numbers and realise that I'd end up in big trouble come credit card statement due date. I've ordered alloy tube, bends and silicone hose to make my secondary intake pipe to the factory airbox and resonators to replace the secondary cats so I'll just take care of those first and see what products are available once I'm in a position to be able to buy turbos.