Turbo upgrade

[MRBBR227]

Whats the best ihi turbo upgrade for my 96 gtb

[slystiguy]

converting to single

[czar loc]

 slystiguy said:

converting to single

+1

[Rosssub]

 MRBBR227 said:

Whats the best ihi turbo upgrade for my 96 gtb

You have VF18 Primary and VF19 Secondary?

The best straight fit upgrade is a VF26 & VF27.

VF33 & VF32 from a Rev D/E BE/BH will bolt on but your intake pipe wont be big enough for the larger VF33 Primary Turbo Intlet.

[slystiguy]

Without listing more about your car this is a little bit of a "dumb" question.. Or are you maybe replacing a damaged one?

Have you done the basic mods like boost/intake/exhaust/intercooler/parallel or sequential controller/computer ?

If you are going to spend money on it and you want a more usable power then single turbo is the better choice in the long run.

[MRBBR227]

Just want abit more power and want to know whats best turbo upgrade to do so. No i havnt done parallel or squential controller some more info on this will be helpfull cheers

[Rosssub]

Have you got a boost gauge fitted?

[MRBBR227]

Yes have a boost gauge fitted.

[Rosssub]

What psi is it running? Single/Twin?

[MRBBR227]

15lb and twin

[Rosssub]

Have you got an aftermarket boost controller? Stock exhaust?

[MRBBR227]

No boost controller and stock exhaust

[slystiguy]

Turbo is really the last thing you should be looking at for an upgrade imo. Unless there is something wrong with it. Simply upgrading it won\'t give you much more power anyway. You would need the supporting mods done which i mentioned above. I think Ross had a nice exhaust setup for sale that had all the restrictions in the pipes removed.

Research all the points I covered in my post above...

[MRBBR227]

Whats the go with this parallel/sequential controller more info on this would be great. Would keen on a good topmount intercooler

[Rosssub]

Parallel - Is locking it in twin turbo mode permanently. It won\'t make boost till 3500-4000rpm or more. Then no difference up top.

Sequential controller - Made by Zerosports, it splices into the ECU loom. Then you can adjust when the second turbo kicks in (changeover). Normally hits at around 4000-4250rpm, the zerosports controller can adjust it from 4000rpm up to 5000rpm. So you can stay in single slightly longer, or stay in twin longer once there.

Still no extra power, unless tuning on a Dyno to adjust VOD/changeover out of the peak torque range.

Start with an AM boost controller, then AM muffler, then AM mid-pipe.

Then do some intake work while you consider converting to single turbo.