TRD Reflash + right size turbo and injectors.. does it work?

unxpectederror · Joined: 15 Aug 2007 Posts: 764 Location: shes my <3

i was just wondering if you pieced together a turbo kit with a turbo that has the same cfm output as the S/C and used the 410cc injectors if it would be safe to use the TRD reflash as a tune as long as you stay with in the boost range of the tune?

now i know this probably wouldn't make huge power but it would be much more efficient then running a supercharger as you wouldn't have the large parasitic losses of the s/c to deal with.

Ace83 · Joined: 26 Aug 2006 Posts: 5792 Location: TX

turbo utilize a different powerband than superchargers, a very closely speced turbo might work but not as well as an engine management that should be considered rather than the trd reflash.

jetlounge · Joined: 03 Oct 2005 Posts: 1271 Location: Westchester, NY

^what he said. and it's not apples and oranges.

why would you even want to do a frankenstein job like that anyway?

unxpectederror · Joined: 15 Aug 2007 Posts: 764 Location: shes my <3

was just curious, and actually the type of supercharger that we have for our cars their power band is close to that of a turbo ...

im just trying to think why it wouldn't work?
i bet you would see atleast 250whp with a simple turbo kit running at around 7-8psi on the flash if it works

nlataille18 · Joined: 20 Sep 2007 Posts: 312 Location: RhodeIsland

buy my lights..... and exhaust

unxpectederror · Joined: 15 Aug 2007 Posts: 764 Location: shes my <3

nlataille18 wrote: buy my lights..... and exhaust

what kinda bump is that nate :P

CarbonXe · Joined: 05 Mar 2007 Posts: 6493 Location: Parsippany, NJ

unxpectederror wrote: was just curious, and actually the type of supercharger that we have for our cars their power band is close to that of a turbo ...

im just trying to think why it wouldn't work?
i bet you would see atleast 250whp with a simple turbo kit running at around 7-8psi on the flash if it works

Sorry but no. A turbo running 410cc injectors on 8psi on a standard T3 57 trim .63 A/R and a TRD reflash will result in nothing but a lean AFR.

Ace83 · Joined: 26 Aug 2006 Posts: 5792 Location: TX

CarbonXe wrote: unxpectederror wrote: was just curious, and actually the type of supercharger that we have for our cars their power band is close to that of a turbo ...

im just trying to think why it wouldn't work?
i bet you would see atleast 250whp with a simple turbo kit running at around 7-8psi on the flash if it works

Sorry but no. A turbo running 410cc injectors on 8psi on a standard T3 57 trim .63 A/R and a TRD reflash will result in nothing but a lean AFR.

yup it may lead to a lean afr..
and there is no way you can say the trd s/c powerband is close to the turbo.. every turbo uses different power band, turbine size,wheel, compressor, a/r, ballbearing and those things contribute to different spool characteristics not to mention other factors like manifold design, wastegate, exhaust and others that can affect boost build up/loss.. thats the reason why every turbo car should have its own tune.. and the supercharger starts building boost very early but builds slow thats why full boost is close to redline, a turbo has some lag from 500 to several K of rpms but can hit full boost fast in 2-3K rpms way before redline, can you imagine the untuned part you miss using the reflash? maybe a small and slow spooling will be closer to the s/c

unxpectederror · Joined: 15 Aug 2007 Posts: 764 Location: shes my <3

well the supercharger we have is basically like a turbo driven by the crank. anyways theoretically speaking if you could find a turbo that matches the out put of the supercharger wouldn't it work?

draxcaliber · Joined: 20 Sep 2006 Posts: 7734 Location: Maryland

well back in the day, those zpi stage zero turbos would run 6 psi untuned...so maybe it could work with a trd reflashed ecu, but i have doubts.

jetlounge · Joined: 03 Oct 2005 Posts: 1271 Location: Westchester, NY

no, because a turbo builds boost differently. 9psi does not equal 9psi...ever.

how do you build that power? at what rpm? and the cfm at said rpm? an s/c is not "basically a turbocharger".

anything will "work", but doing something properly is more important than frankenstein hacks. get the proper tune for your application.

unxpectederror · Joined: 15 Aug 2007 Posts: 764 Location: shes my <3

alright well how about this then

use the trd reflash as a base and then get a real tune for the turbo on top of it.

wouldn't that be better then just a normal tune since the trd reflash would be able to compensate for partial throttle where as a normal tune on a stock ecu cant?

CarbonXe · Joined: 05 Mar 2007 Posts: 6493 Location: Parsippany, NJ

unxpectederror wrote: well the supercharger we have is basically like a turbo driven by the crank. anyways theoretically speaking if you could find a turbo that matches the out put of the supercharger wouldn't it work?

No, because the turbo will be flowing a significantly larger amount of air from 3000-6000 RPM.

unxpectederror · Joined: 15 Aug 2007 Posts: 764 Location: shes my <3

well i imagine it would do a slightly better job then the stock ecu normally does, no?

jetlounge · Joined: 03 Oct 2005 Posts: 1271 Location: Westchester, NY

man, you just want someone to say yes to something, don't you?

let it go.

Spicy_McHaggiz · Joined: 12 May 2008 Posts: 369 Location: Peoria, Illinois

doesn't work like that. If you want to go turbo or s/c DO IT RIGHT. Don't skimp out and mismatch "box" tunes.

unxpectederror · Joined: 15 Aug 2007 Posts: 764 Location: shes my <3

well what im trying to get at is even with a "tune" its not done right... unless you go standalone

we cant tune our ecu for partial throttle and not have the ecu compensate for it. the only tune i know that will work like this the TRD. thats why i thought about using it for a turbo application or along with a piggy back tune.

and btw no im not just looking for someone to say yes... i just need to know what the real deal is. if the answer to any of my questions is no, then that's fine too.

doesn't mean i shouldn't ask them

CarbonXe · Joined: 05 Mar 2007 Posts: 6493 Location: Parsippany, NJ

unxpectederror wrote: well i imagine it would do a slightly better job then the stock ecu normally does, no?

That's where piggybacking comes in and where professional tuners come into play.

CarbonXe · Joined: 05 Mar 2007 Posts: 6493 Location: Parsippany, NJ

unxpectederror wrote: well what im trying to get at is even with a "tune" its not done right... unless you go standalone

we cant tune our ecu for partial throttle and not have the ecu compensate for it. the only tune i know that will work like this the TRD. thats why i thought about using it for a turbo application or along with a piggy back tune.

and btw no im not just looking for someone to say yes... i just need to know what the real deal is. if the answer to any of my questions is no, then that's fine too.

doesn't mean i shouldn't ask them

Go look at dyno charts for turbo and S/C applications. The S/C is always a gradual incline in power until peak RPM. The Turbo is always a rapid incline in power during the spool period, then either a flat power curve, or it slowly drops off. You will not be able to make a turbo spool up as slow as a S/C.

Most of the time, the S/C hits about 150whp around 3500, then doesn't hit 210 until 6500RPM. Turbo's will generally go from 150whp to 210 whp (just general numbers) in about a span of 500-700 RPM (during the spool up).

unxpectederror · Joined: 15 Aug 2007 Posts: 764 Location: shes my <3

CarbonXe wrote: unxpectederror wrote: well i imagine it would do a slightly better job then the stock ecu normally does, no?

That's where piggybacking comes in and where professional tuners come into play.

im talking about for open loop tuning... which you can not tune for no matter how good the tuner is, the tune will just not stay. thus what im saying is wouldn't the trd reflash be more apt for this even if it cant handle the power of a turbo at open loop its probably gonna come much closer then the stock ecu would come to proper afr.

i don't understand how the reflash wouldn't be a safer starting point then the stock ecu program