My goals toward a 270-300bhp

[razmrtwo]

Here is what i plan for my tubby :

- CT26 Hybrid/CT20b/TD-05
- Aftermarket intercooler
- Rev3 Metal HG
- Custom stainless steel exhaust manifold
- aftermarket downpipe
- SARD adj FPR
- Bigger Injectors (650cc or 720cc)
- Piggyback ECU like Greddy Emanage Ultimate

I have some basic mod done such as Apexi intake, HKS SQV BOV, Hi flow fuel pump, Blitz ID-III SBC Boost Controller and HKS Hi Power exhaust system.

I am yet to run my car on a RR to see what is the baseline fig but I'll be more than happy if it produce around 260bhp after the mods What do u all think? Is it a realistic target?

[kev_mr2]

I'd say so

I've got a pretty much identical spec and using a CT26 Hybrid (48mm compressor wheel.

The old owner has just dug out some "rolling road graphs"

dont know if theyre true or not but it was making 312 and 313 flywheel power at 1.1ish bar which is good

sorry that was without fuelling mods and the greddy e manage

[RobCrezz]

Deleted, due to bad info!

[jimGTS]

emanage is a piggyback.

your goals should be fine with those mods....

you do not need a fpr, or a aftermarket manifold btw.

[RobCrezz]

emanage is a piggyback.

your goals should be fine with those mods....

you do not need a fpr, or a aftermarket manifold btw.

I stand corrected!

I was sure someone was telling me they were standalone

[razmrtwo]

If I am to use a stock CT20b and stock injectors and without Emanage Ultimate, can I run 1.0-1.2 bar of boost?

[RobCrezz]

If I am to use a stock CT20b and stock injectors and without Emanage Ultimate, can I run 1.0-1.2 bar of boost?

What injectors do you have? Rev1/2 or Rev3?

[kev_mr2]

Think the Rev 1/2 is at its limits around 1bar and wouldnt risk anymore, you would need an FCD to get that as fuel cut is around 13psi i think

The Rev 3 will be ok for 17 psi (1.1bar or thereabouts) before it hits fuel cut. with an FCD that fits i think the actual fuel system can manage a bit more, i stand to be corrected though.

[razmrtwo]

If I am to use a stock CT20b and stock injectors and without Emanage Ultimate, can I run 1.0-1.2 bar of boost?

What injectors do you have? Rev1/2 or Rev3?

Currently, my car is running on stock 440cc injectors.

[gtech]

Think the Rev 1/2 is at its limits around 1bar and wouldnt risk anymore, you would need an FCD to get that as fuel cut is around 13psi i think

The Rev 3 will be ok for 17 psi (1.1bar or thereabouts) before it hits fuel cut. with an FCD that fits i think the actual fuel system can manage a bit more, i stand to be corrected though.

With the Rev 3 you cannot use a standard FCD, this is down to the fact the rev 3 works of MAP. Paul Port did an FCD specifically for the Rev 3, super device, and unfortunately like "hens teeth" as Paul has manufactured for some considerable time now......a great pity.

[razmrtwo]

Think the Rev 1/2 is at its limits around 1bar and wouldnt risk anymore, you would need an FCD to get that as fuel cut is around 13psi i think

The Rev 3 will be ok for 17 psi (1.1bar or thereabouts) before it hits fuel cut. with an FCD that fits i think the actual fuel system can manage a bit more, i stand to be corrected though.

How much boost can I run with the following mods? :

-CT20b
-FCD
-Rev3 HG

[gtech]

Think the Rev 1/2 is at its limits around 1bar and wouldnt risk anymore, you would need an FCD to get that as fuel cut is around 13psi i think

The Rev 3 will be ok for 17 psi (1.1bar or thereabouts) before it hits fuel cut. with an FCD that fits i think the actual fuel system can manage a bit more, i stand to be corrected though.

How much boost can I run with the following mods? :

-CT20b
-FCD
-Rev3 HG

To be honest I would'nt like to say, I know for a fact others are running 1.2 - 1.3 bar and some even beyone that, again all depends on supporting mods and I would think CT20B will be running on the edge of its limits at 1.3bar........I may be wrong though

[RobCrezz]

Think the Rev 1/2 is at its limits around 1bar and wouldnt risk anymore, you would need an FCD to get that as fuel cut is around 13psi i think

The Rev 3 will be ok for 17 psi (1.1bar or thereabouts) before it hits fuel cut. with an FCD that fits i think the actual fuel system can manage a bit more, i stand to be corrected though.

How much boost can I run with the following mods? :

-CT20b
-FCD
-Rev3 HG

With them injectors I wouldnt want to go over 1bar just incase it leans out.

[kev_mr2]

Think the Rev 1/2 is at its limits around 1bar and wouldnt risk anymore, you would need an FCD to get that as fuel cut is around 13psi i think

The Rev 3 will be ok for 17 psi (1.1bar or thereabouts) before it hits fuel cut. with an FCD that fits i think the actual fuel system can manage a bit more, i stand to be corrected though.

How much boost can I run with the following mods? :

-CT20b
-FCD
-Rev3 HG

With them injectors I wouldnt want to go over 1bar just incase it leans out.

Couldnt agree more.

get some Rev 3 or sard injectors and an apexi safc or greddy e mange to control them and with they mods you can run around 1.1 or 1.2 bar and make good figures without putting the CT20 under too much pressure.

uprate the fuel pump aswell and the change for colder plugs and it should be ok

EDIT- TBH your pretty much at the same point as me. Im changing to the Rev 3 ECU setup and running a Stage 3 CT26 hybrid.

My mods so far on my Rev1.

Cometic 1.2mm head gasket with ARP bolts
Rev3 ECU setup. comprising of ECU, Inlet and manifold air temp sensors, coil and ignitor. O2 sensor, injectors, Engine loom. and iv probably missed something out.
ARC intercooler (i think it is)
Blitz decat into a 3 1/2" straight through exhaust
Lightened flywheel and uprated clutch
Grade 7 plugs
Magnecor KV85's
Blitz BOV

Im hoping to make around 320 to 330 as it made 310 easilly on the standard rev 1 fuelling. I may at somepoint do away with the ECU, injectors and turbo and go for a GT3076, Apexi Power FC and 800cc's but to do that i will need forged pistons etc

[razmrtwo]

Is it possible to upgrade the CT26 and make it hold the boost longer (i.e until redline)??

[kev_mr2]

yeah get the hybrid version. its meant to be alot better

[razmrtwo]

yeah get the hybrid version. its meant to be alot better

I am planning to get the CT26 of my tubby to be uprate in the future. Can anyone help what is the best specs (compressor wheel size and turbine wheel size) for good response and at the same time improve the power throughout the rev range..

[razmrtwo]

Anyone?

[RobCrezz]

Anyone?

have a look on Fensports site, they state on there what size compressors they use for their hybrids.

a ct20b hybrid may even be a better option for you.

[razmrtwo]

Anyone?

have a look on Fensports site, they state on there what size compressors they use for their hybrids.

a ct20b hybrid may even be a better option for you.

CT20b is very difficult to get in my country mate. So, the next best thing to do is to uprate my current CT26 turbo. Perhaps, using a bigger compressor wheels and match it with smaller turbine wheel along with steel shaft to improve response and power.