Rb25 Neo Setup & Modification Advice Ideas

[Ke55pig]

Im looking for some ideas on my next stage of modifications.

My current setup is as follows

340rwkw @17-18 psi on BP 98

Rb25det Neo

Stocks gasket and head bolts

Stock motor

Tomei Type B Poncams

Kinguawa T67 25G 10Cm

Nz performance Hi mount with 44mm gate pipe

Tial 44mm Gate/38mm screammer pipe

Greddy FFP

VH45 TB

Greddy Twin entry Fuel Rail

Sard 880cc Injectors

Sard fpr

2.5" cooler pipeing

Greddy Type M intercooler core

3" DUMP

Blitz Nur Spec R 76mm

Im now Looking for ideas of were to go next id like to find some more midrage power ,Ideas are

Going to a 4" dump

ADJ Exhaust Cam Gear

Possibly E85

3" cold side cooler pipeing

8cm Rear Turbo Housing

[Dan93]

Going E85 from what I've read is great for midrange

[R31 drift pig]

Dont reckon you'll gain too much with a cam gear. Maybe a bit.

Best bet is to piss off the GReddy plenum and go back to factory; will lose some peak power but gain heaps of midrange.

Im aiming for around the power you have now, with a TD06L2 20G, and have kept the factory plenum for exactly that reason. Am using Plazmaman piping to keep clear of high mount turbo.

Think injector size will be too small for e85, and possibly fuel pump.

Can run on e85 and see what you get?

Don't need to change cooler piping/exhaust/exhaust housing at all either.

Edited October 22, 2015 by R31 drift pig

[Ke55pig]

I went greddy inlet for shorter pipeing and neater engine bay wont be changing that.

I am keen for e85 but closest pump is 45 mins from me so will need to get a 44 gal drum and store it at home.

Think injectors would be on the edge with probaly 380 ish with e85 .

Pumps will be fine 044 and 0404

[Walfers]

With the tomei cams, do you loose vct? Any reason you went type b over a?

[Roy]

I made 310rwkws with a TD06-20G on an RB20 with E85. Having run a T67 and TD06 and a billet 73HTA-TD06 on my RB25 I personally rate the 20G or the 73HTA better than the T67. Spin 20psi through one and you will make 320rwkws with a crap load more mid...though you will find you dropping the rev limit to 7,500rpm as the show is over by then.

If I can get a 10cm I will be putting the 20G back on my car and selling the T67

[R31 drift pig]

That plenum is where you'll find the most gains with the way your engine is setup. (keeping everything else the same that is) Shorter piping is no match for the midrange that the factory plenum provides. Well proven.

And reckon you'll run out of pump around the same level as the injectors. (On e85 that is)

My tuner advised me that safe level for single 044 on e85 with is around 360-380 kw. May have to add a 2nd 044, which is easy to do with your rail.

Edited October 22, 2015 by R31 drift pig

[R31 drift pig]

I made 310rwkws with a TD06-20G on an RB20 with E85. Having run a T67 and TD06 and a billet 73HTA-TD06 on my RB25 I personally rate the 20G or the 73HTA better than the T67. Spin 20psi through one and you will make 320rwkws with a crap load more mid...though you will find you dropping the rev limit to 7,500rpm as the show is over by then.

If I can get a 10cm I will be putting the 20G back on my car and selling the T67

Out of interest, what do you reckon a 20G will make on e85 on a 25?

With the tomei cams, do you loose vct? Any reason you went type b over a?

Believe they both retain VCT.

I am keen for e85 but closest pump is 45 mins from me so will need to get a 44 gal drum and store it at home.

If you keep the drum off the ground with some wood or bricks, it'll be fine for 12 months.

I do the same thing, but liberty Main nth road is 5 mins away from home.

Maybe switch to e85 first and see what it makes, if you run out of injector switch to some 1000cc's, or 1200's, and add another pump if need be too.

[Ke55pig]

I would like to stay with the t67 as although this is now a street car it will still see the track pluss i have a spare core for it to i just had rebuilt.

I know there is room to find torque bye getting rid of the ffp but im not willing to remove it as i just like the look and gives headway for crazy power.

I beleive a 044 will support 400 on e85 i could be wrong more then happy to add another if i need to injectors well id like to not have to change them but if need be i can.

I went type b because i got them for a good price wanted choppy idle and because race car hahah

[Ke55pig]

I first built the combo as a drift car but has been transfered into a streetcar.i was looking to go 400kw like simon r32 did with my previous motor that had studs and metal hg with this motor i havent done that so dont want to put much more boost through it

[WMDC35]

I'd keep the cold side piping the same size as the turbo outlet.

The FFP seems to have varying results, I wouldn't put one on a car now but also wouldn't take one off if it's already on there.

If e85 is not convenient could do the e42 mix.

There's a post from Status here somewhere saying the 8cm doesn't seem to be that much more responsive but loses about 30 or 40kw up top so if doing something with the turbo I'd probably go to a BW or PT.

Stock cams & TB may make it feel a bit better in the mid range.

E42, more boost & maybe head studs

[Ke55pig]

Its booked in on the 30th for e85 tune so lets hope my injectors and pump can hold watever it makes assuming 350 370

[Dose Pipe Sutututu]

put in new headstuds, and pump as much boost as you possibly can with that turbo on e85.

Motor loves it, especially on E85.

[Ke55pig]

Loves it till it goes bang

[GTSBoy]

50 of nitrous.

[Ke55pig]

Street car guys lol

[scotty nm35]

Loves it till it goes bang

If anything is going to stop it going bang, e85 is it. I don't understand why so many of you guys are still using that petrol crap.

I understand it can be hard to find in the country but a little proactive email campaign to United would have a pump fitted in no time I suspect. We need an ethanol lobbying group setup as the rollout seems to have stalled due to base stock prices skyrocketing.

As Johnny mentioned, your head studs will be the issue with that much cylinder pressure.

[Ke55pig]

Were going keep it 18 go e85. till i get injectors another 044 and studs

[Dose Pipe Sutututu]

boost doesn't make motors go bang, shit tuning and poor fuel does.

I run 24psi all day

[Ke55pig]

Yea i understand that i dont have the fuel system for anything more then 18 psi.