Factory Tune And 10psi Actuator

[TUF250]

Hi all.

I have a S2 R33 GTS-T with the common mods: 3 inch turbo back, high flow filter and an R34 SMIC, std 5/7psi boost.

The car has also been serviced thouroughly, new plugs (0.9mm), timing belt, timing set, all new oils etc etc

The car runs great! and performs very well and smoothly given the basic mods, for what it is Im thrilled with it.

I have just bought an R32 GTS-T actuator (10psi).

I want to put this in the car, my plan was to put it in and baby it down to status dyno and get the AFRs checked and make sure its all safe.

Now my question is, I know it will not be tuned and will run rich but will I see alot of improvement over stock? or will it overfuel so badly that I might as well not do it and wait until I can afford a nistune?

keen to hear peoples thought

Regards.

[Rolls]

It will be a slight improvement but you will probably get misfiring and a very rich engine.

[SlowSkyline]

mate you dont need to baby it to a dyno lol! all your doing is upping the boost a few psi, 10psi is fine on the stock turbo and for the ecu in most cases, and it will have twice the boost in the mid range, should go a whole lot better.

only thing is it will run abit rich. and the normal rb flat spots will be more noticable... tune fixes that though.

[Dose Pipe Sutututu]

dude, you'll be fine, there are guys running 12psi with stock ecus and shiet and their A/F are safe, when I say that, rich as fk

I don't know why guys pay big bucks to put their car on a dyno when they up their boost a tiny bit and say their car has been 'dyno tuned' when they only have had their boost controllers setup.

[paulr33]

yeah it might be a hit and miss, it may work ok or it may be enough to trip the factory R&R triggered by too much airflow meter load

the R32 actuator is actually rated a bit around, around 11PSI is enough to make the spring open according to factory specs from nissan

[Marcus89]

I don't see the point in doing this when MBC's cost like $30?

[HEKT1K]

actuators can be had for similar money and won't get you defected

i had an r32 actuator on my stock turbo, with full exhaust and FMIC it was fine, noticeable improvement without any serious drawbacks

[Dose Pipe Sutututu]

I don't see the point in doing this when MBC's cost like $30?

maybe if it's free, why not right?

once again, I will re-iterate, don't waste your time on a dyno

[Rolls]

maybe if it's free, why not right?

once again, I will re-iterate, don't waste your time on a dyno

it is not a waste of time if his computer has the stock maps, even without a boost increase a remap on the dyno would be of great value, more power, response and better fuel economy.

[R31Nismoid]

Some ECU's crack it @ 9psi, some are fine with 12psi.

Its just luck of the draw. Either way just dont go giving it heaps of curry until you get it checked out.

End of the day all that will happen is it'll hit R&R mode in epic fashion anyway.

[Cam84]

Mate I have a S2 R33 FMIC,3.5 exaust, Pod with an EBC I'm running 10psi with no dramas, I get 450km in a good week. But I still want to put it on the dyno to see if it can do any better but for now it's great. Give it a go before spending the money

my two coin

Cam

[TUF250]

yeah only reason for using this over EBC is factory look.

I might give it a shot, no point in doing it yet if im going to hit R&R as i already suffer from this on really really cold nights.

What would i expect to pay for a basic tune (remap) on a baisc setup like mine, say nistune remap

[Rolls]

yeah only reason for using this over EBC is factory look.

I might give it a shot, no point in doing it yet if im going to hit R&R as i already suffer from this on really really cold nights.

What would i expect to pay for a basic tune (remap) on a baisc setup like mine, say nistune remap

I paid $300 for the unit when I supplied the ECU, a basic safe tune was then $300. Depending on your level of mods and if they can use a decent base map that just needs to be tweaked a full tune where they tweak and check everything can vary from $500 to $1500.

[TUF250]

thanks guys, might give it a go, jsut worried about getting a flat spot which i currently dont have. Have been looking into toshi's remaps (business trader on this site) anyone had any experience with his retunes with a similar combo as mine?

ps my car has a new walbro fuel pump now

[Rolls]

don't bother getting a remap unless it is on a dyno.

[TUF250]

yeah thats fair enough, what would i expect to pay to get the afr checked on a dyno? $100ish??

[SlowSkyline]

yep $90-100 for a few runs. But if your going to be upping the boost a few psi, it will run richer not leaner, especially if it has a new fuel pump. So checking the afr's are not going to tell you anything new, 10:1 afrs in the top end or even worse

[TUF250]

which might offset alot of the gain, might give it a shot but might not be worth while until its tuned