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Turbo Technics S280

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Fresno
My HP is still climbing at fuel cut off at 7000 RPM on 3rd gear, wondering if I could adjust the rev, I tried the Cobb ecu adjustment to 7300 but it doesn't seem to work. Is this something that can only be done by the tuner?
Pending order for nostrum or xdi and upgrade map sensor, shooting for 360 whp :) on e50. Still waiting for others to get their final revisions on the nostrum before I buy the nostrum, if not I'll just get the xdi.
 


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Location
OC
I went with what my Tuner ( Adam) recommended. Basically stated like esp_martin pointed out that the stock actuator does not hold higher boost consistently. I am running 91 and E30 tunes and pushing 27lbs of boost highest has been 29lbs.
Are you on the stock fuel system? How much boost are you making on 91?
 


Dpro

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Are you on the stock fuel system? How much boost are you making on 91?
I am on the stock fuel system. I have a set of Jag injectors for it but I have not put them in. I make 27lbs on 91 and have hit 29lb during tuning but my tuner pulled it back to 27lbs so as to not lean it out to much.
 


M-Sport fan

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my internal monologue when i saw it go past 7000RPM

"shift...shift. SHIFT...what is this madness?!"
Even totally, fully built (with the best block setup, and strongest internals, valvetrain, etc., currently available), and balanced to perfection, I wonder how high a redline these under-square engines can handle before grenading? [dunno]
 


Woods247

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Please don’t kill me if this has been answered a million times.. My search skills showed nothing but theories. How much max power is this turbo capable of with HPFP and injector upgrades? Has anyone pushed it 100%? Not worried about the block.
 


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297
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Location
Broken Arrow
Please don’t kill me if this has been answered a million times.. My search skills showed nothing but theories. How much max power is this turbo capable of with HPFP and injector upgrades? Has anyone pushed it 100%? Not worried about the block.
Adam (tune+) made exactly 400whp in his "trash fiesta". Currently running mine at 370ish whp.
 


Messages
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8
Location
Montreal, QC, Canada
I was wondering: If I go with the S280 with stock fueling, tuned for 91OCT, can I stick with the stock cat? And if so, what would be the ramifications on things like spool speed, max torque/hp?

I know that some guys have gone forward with the S280 with stock cat, so it's feasible, but there's no feedback on what's being left on the table if you don't upgrade to the high flow cat. Trying to get myself in or out of a case of mightaswell-itis.

Existing mods: High flow filter, whoosh induction + crossover, whoosh V3 intercooler, flowmaster 2.5" catback.

Either way I still need to install B6s all around and get new summers and winters, so still in the planning stages for this upgrade.
 


Last edited:

Dpro

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I was wondering: If I go with the S280 with stock fueling, tuned for 91OCT, can I stick with the stock cat? And if so, what would be the ramifications on things like spool speed, max torque/hp?

I know that some guys have gone forward with the S280 with stock cat, so it's feasible, but there's no feedback on what's being left on the table if you don't upgrade to the high flow cat. Trying to get myself in or out of a case of mightaswell-itis.

Existing mods: High flow filter, whoosh induction + crossover, whoosh V3 intercooler, flowmaster 2.5" catback.

Either way I still need to install B8s all around and get new summers and winters, so still in the planning stages for this upgrade.
I do not think it will make much if any difference. The stock downpipe was shown to flow over 375hp many years ago by OG members that are not around anymore. You might leave a few hp on the table but it’s not going to be anything significant.
 


Messages
491
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550
Location
Camden, NJ, USA
I was wondering: If I go with the S280 with stock fueling, tuned for 91OCT, can I stick with the stock cat? And if so, what would be the ramifications on things like spool speed, max torque/hp?

I know that some guys have gone forward with the S280 with stock cat, so it's feasible, but there's no feedback on what's being left on the table if you don't upgrade to the high flow cat. Trying to get myself in or out of a case of mightaswell-itis.

Existing mods: High flow filter, whoosh induction + crossover, whoosh V3 intercooler, flowmaster 2.5" catback.

Either way I still need to install B8s all around and get new summers and winters, so still in the planning stages for this upgrade.
it won't make any difference unless you upgrade your exhaust manifold; i've read (and the sciences backs it up) the exhaust manifold is the bigger choke point past the turbo. but i don't have the real world numbers to back that claim up.

if you upgrade the manifold you will see some gain in upgrading to a high flow cat. if you don't upgrade the manifold, anything past it you're just doing for noise.
 


Messages
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Location
Fresno
I have a problem with my coil packs hold down bolts after the s280 installed. They kept coming loose, anything to help with that? Should I use thread locker? My engine mounts are already upgraded.
 


gtx3076

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I have a problem with my coil packs hold down bolts after the s280 installed. They kept coming loose, anything to help with that? Should I use thread locker? My engine mounts are already upgraded.
That sounds like a terrible idea. I can't imagine how they're coming loose unless you've already stripped them.
 


Jabbit

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I have a problem with my coil packs hold down bolts after the s280 installed. They kept coming loose, anything to help with that? Should I use thread locker? My engine mounts are already upgraded.
I broke one of the thread inserts for a coil pack. Only solution is a new valve cover but I'm not going to worry about it.
 


Messages
16
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8
Location
Montreal, QC, Canada
it won't make any difference unless you upgrade your exhaust manifold; i've read (and the sciences backs it up) the exhaust manifold is the bigger choke point past the turbo. but i don't have the real world numbers to back that claim up.

if you upgrade the manifold you will see some gain in upgrading to a high flow cat. if you don't upgrade the manifold, anything past it you're just doing for noise.
Thanks, that was in my plans as well - I'll probably pull turbo with the manifold. Still wondering if I should grab a used stock one and port it (either at home or through a local shop), or grab one of the aftermarket ones.
 


MagnetiseST

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Dania Beach
I broke one of the thread inserts for a coil pack. Only solution is a new valve cover but I'm not going to worry about it.
Its a ignition coil mounting bracket over the valve cover. I don't think they're too expensive, its part number BM5Z-12257-B, should be around $60
 




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