Bigger Turbo ... No Computer

[G-Money]

i plan on getting an SAFC sooner or later but i picked this turbo up for a bargain so i couldnt pass it up. give us ur ideas (rb20 auto)

cheers

[G-Money]

come guys im bored just tell me if i will feel more power or not

[QWK32]

you will feel more power. also will have it leaning out under full boost which is bad, very bad.

[R31Nismoid]

What will happen?

Unless your running like 7psi or so

Most likely just a 'little' detonation, which will kill your motor.

Upgrading the turbo and not doing management is motor suicide.

[john-e boi]

just a question. safc bosch 040 and fpr with bigger turbo? would that be okay?

[GeeTR]

Good son of rajab theres been some corkers this weekend.

Its like making a cordial drink man. The aim is to make MORE drink, but at the same have the same strength taste. Uv got the ability with your big turbo to pour (move more air) more water into the glass, but where as a weak (lean) drink will just agitate you.. a lean mixture will uncontrollably ignite in your engine and pop it.

FPR (and pressure raise) + SAFC will allow some leeway... but really, if you KNOW you want power, and have a bigger tahbin in mind, grab a real aftermarket ECU and some injectors, sell the FPR and tune to your next bottleneck.

Its not just about a free flowing water source, u gota be able to accurately meter your cordial concentrate delivery, otherwise its weak city and boom.

[kjb_r33]

Good son of rajab theres been some corkers this weekend.

Its like making a cordial drink man. The aim is to make MORE drink, but at the same have the same strength taste. Uv got the ability with your big turbo to pour (move more air) more water into the glass, but where as a weak (lean) drink will just agitate you.. a lean mixture will uncontrollably ignite in your engine and pop it.

FPR (and pressure raise) + SAFC will allow some leeway... but really, if you KNOW you want power, and have a bigger tahbin in mind, grab a real aftermarket ECU and some injectors, sell the FPR and tune to your next bottleneck.

Its not just about a free flowing water source, u gota be able to accurately meter your cordial concentrate delivery, otherwise its weak city and boom.

That my friend, is a GREAT analogy. very good

[funkymonkey]

could've used scotch, but cordial's more PG I guess. No one likes watered down scotch.

Although there is a catch, if the wastegate in your turbo is set to a very low boost at standard then running it with no aftermarket ECU should be safe, it won't be the best, but it'll be safe. I mean, if you had a TD06 25G, and the wastegate was set to 8 PSI (hypothetically speaking of course) then its no different to a standard sized turbo with a wastegate set to 8 PSI, as after it reaches this amount of pressure both turbos will bypass. In fact being a bigger turbo you might find that at lower RPM's the turbo dosen't spool up fast enough to push as much air, and thereby gives you a RICHER mixture. However this is only if your bigger turbo runs an internal wastegate that's set to a close to stock pressure... most aftermarket turbos aren't.

Bottom line, your fuel needs to match the air going in, running rich or lean is not optimal... but too lean can be dangerous.

[fEkuaR]

could've used scotch, but cordial's more PG I guess. No one likes watered down scotch.

Although there is a catch, if the wastegate in your turbo is set to a very low boost at standard then running it with no aftermarket ECU should be safe, it won't be the best, but it'll be safe. I mean, if you had a TD06 25G, and the wastegate was set to 8 PSI (hypothetically speaking of course) then its no different to a standard sized turbo with a wastegate set to 8 PSI, as after it reaches this amount of pressure both turbos will bypass. In fact being a bigger turbo you might find that at lower RPM's the turbo dosen't spool up fast enough to push as much air, and thereby gives you a RICHER mixture. However this is only if your bigger turbo runs an internal wastegate that's set to a close to stock pressure... most aftermarket turbos aren't.

Bottom line, your fuel needs to match the air going in, running rich or lean is not optimal... but too lean can be dangerous.

No entirely accurate.. a bigger turbo at standard boost will still flow more air then a smaller turbo at the same boost. Also the maps will be completely incorrect for the turbo flow.

[kjb_r33]

Example, i think it was sydney kid who said that an RB25 turbo at 5lb will flow the same amount as an rb20 turbo at 10lb

[G-Money]

i have gtr injectors BTW the bigger turbo is a stock RB25 turbs.

so if im running this turbo at 8-9 PSI i'll feel a difference???

[Pal]

bottom line, get a proper ECU and don't waste ya hard earned cash on band aids, otherwise you will be in for a major operation

[G-Money]

so the SAFC won't do the trick. i'm only looking for around 200 rwkw

mods include :

GTR injectors

walboro 500

r33 stocker turbo

SAFC

exhaust soon to come

[sam5709]

pm stritch9 on these forums, he might be able to give you some good insight

he is running a hks2535, and a few other little goodies and is running everything with a safc-II

[LatinR33]

bottom line, get a proper ECU and don't waste ya hard earned cash on band aids, otherwise you will be in for a major operation

I agree, purchase a decent ECU and your car will love you for it.