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Are big turbos worthwhile and hows the reliabilitys

AzNightmare

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#81
What tires are you guys running? Are any of you still using 205's with the S280's? How's traction with all the extra power?
 


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#82
What tires are you guys running? Are any of you still using 205's with the S280's? How's traction with all the extra power?
The powerband is completely different than a stock/hybrid setup man. Its not a donkey kick right at 2700/3000. Its a gradual ramp up with the right tuning, full boost at 3300. I rarely spin my tires, unless its raining but duh, and im on 205/45/16’s BF comp 2’s with not that sticky of a tire and a 340uqtg…i doubt with stickier tires like the falken 660’s would spin at all. I spin less than my stock turbo e40 setup. Very happy about that
 


Dpro

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#83
The powerband is completely different than a stock/hybrid setup man. Its not a donkey kick right at 2700/3000. Its a gradual ramp up with the right tuning, full boost at 3300. I rarely spin my tires, unless its raining but duh, and im on 205/45/16’s BF comp 2’s with not that sticky of a tire and a 340uqtg…i doubt with stickier tires like the falken 660’s would spin at all. I spin less than my stock turbo e40 setup. Very happy about that
This is much like I was saying. I will say though I did spin my RS pro’s 205/45 16 if I nailed it hard with my Dekagrams . With my RT660’s 215/45/17 and Titans( about 2lbs heavier than the Dekagram) its another story its really hard to break them loose. I will say the hookup and speed is awesome though.
 


jeff

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#84
I’m nowhere close. On e30 I might get 24mpg. Granted, I have a shit load of aero so don’t listen to me… The canards alone killed fuel economy. @jeff posted his MPGs I believe. His car has the same turbo and tuner as well and would make a much better comparison.
I get around 29-31 around town on 93 depending on my driving style, and 36-38 highway, 93 octane, X47 turbo.

I get around 26 around town on e30, never done a highway trip on ethanol.
 


AzNightmare

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#85
Is anyone running the S280 fine while reusing the oem bpv or is upgrading this essential?
 


Dpro

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#86
Is anyone running the S280 fine while reusing the oem bpv or is upgrading this essential?
you can run the stock bpv. Its just prone to failure under heavy boost. With a s280 you will be pushing around 26lbs on 91. If you are tuned for E30 or race gas you can push more.
A blowoff valve is like $200 at most.
 


haste

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#87
Is anyone running the S280 fine while reusing the oem bpv or is upgrading this essential?
I've been running the OEM on my X-37 for almost 5 years now. I normally run 24-25 psi in the warmer months and hit 26+ in the colder months without any issues. Although, my next upgrade will be a symposer port bov. :D
 


gtx3076

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#88
I'm getting 31mpg on E30 currently, but I drive 80 miles daily cruising between 70-80mph. If I was on 93 I'd be getting closer to 33-35.
 


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#90
I was under the impression the Hybrid or S280 were similar on pump 91 or maybe even 93, but if you have access to ethanol, the S280 has a much higher ceiling.

What do you mean by softer than stock at the bottom end?
bottom end is pretty important for me cause 75% of my driving is in the city, lol.
I found that the hybrid hit like Thors hammer from the bottom end. The S280 spools up about 500 rpm later in the rpm range, but pulls very hard all the way to 7K rpm and with less charge air heat than the hybrid. If I was street racing or auto crossing I probably would have gone with the Whoosh hybrid and an LSD, but I just wanted lots of power for passing in the mountains and on the highway. I find the power band on the S280 to be 2500 rpm wider than stock and approximately 1500 rpm wider than the hybrids and spools just slightly slower than either. IMO it's pretty much the perfect all around turbo, considering ease of installation and the power you can get from pump gas. 280 wheel hp on 91 should be fairly easy. Once it starts to spool it pulls hard all the way to redline.
 


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#91
Do hybrids put down more tq in 1st and 2nd than oem turbo? Personally, I've never had issues with traction when it's dry with oem turbo, but from the sound of it, looks like hybrids dump even more power down low.

I may consider S280 now. But how's it like when driving from light to light in the city and zipping through traffic? Does it feel quick?
I think it feels quick, but its less like an on/off switch and more like a rheostat IYKWIM. I think it's easier to put the power down without excessive wheel spin than the stock turbo. It also doesn't crap out at 4500 rpm like the stock turbo.....you can really stretch it out in second and third gear.
 


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#92
I think it feels quick, but its less like an on/off switch and more like a rheostat IYKWIM. I think it's easier to put the power down without excessive wheel spin than the stock turbo. It also doesn't crap out at 4500 rpm like the stock turbo.....you can really stretch it out in second and third gear.
Agreed. Its way easier to put power down, it pulls like a na motor once in boost with the powerband now and being able to keep the tires from spinning is a big plus for me. Keeps on chuggin along to 7K. Fourth gear 7K might get ya into some trouble if caught lol. And its not really fast enough to be “fuck it i wont catch him” speed as ive experienced in other cars lol.
 


ronmcdon

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#93
Yes and no. It all depends on the gearing of the car. I get where you are coming from though because TQ is always better on the street as its more needed to get cars rolling from a stop HP is a functioning of TQ that keeps the car rolling.
With that said when it comes to our cars and the TQ we are talking about our cars can just get stupid in the TQ department real quick even a tune on the stock turbo giving you the ridiculously silly donkey kick is a laugh a minute . Till one tires of spinning their tires everytime they gun it in the first two gears. Plus the trade off on our cars for all that silly TQ down low is rev band that falls flat on its face power wise after 4500 rpm.
So you have a choice insane silly giggles of TQ down low that runs out early in a engine that loves being wound up to 6500-6800 all day long where their is no power to be had. Or a Turbo that retains stock like characteristics down low. but then gets up and goes like hell in the midrange and top end. Sure you do not need that top end much but in your own words mid range is very important. On a stock setup with a tune midrange is starting to die off hard. In a Hybrid you still have some midrange and a bit of top end except your running a stock frame turbo at its peak of ability so to speak.
Whereas with a bigger turbo like the s280 its running more efficiently and not at the peak of its ability to output the power. That spells longevity.
Its all up to what a person wants . I cannot fault someone for wanting and using a hybrid. They are fun. Yet if you want to talk about drivability daily I do feel a s280 is actually better suited.
My buddy drove my car yesterday his words to me being impressed how it seamlessly integrated into the chassis tune wise was “ if someone told me the car came stock from the factory this way it would be believable“ Thats not a diss as it meant the setup gave the car a lot of extra power but not at the expense of drivability.
maybe I didn't drive it hard enough, but found the S280 a bit more manageable on the lower end compared to my stock turbo, cobb ots st2 tune, 91 octane. coming from an evo x, not used to all that torque steer on my car and find 2nd gear hard to use at hpde events. installing a dizzy map and hope that helps. thanks again for letting me check out the s280. also tune plus did a great job making the car feel oem. I think this would be a good setup for hpde and maybe make 2nd gear more useable.
 


Dpro

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#94
maybe I didn't drive it hard enough, but found the S280 a bit more manageable on the lower end compared to my stock turbo, cobb ots st2 tune, 91 octane. coming from an evo x, not used to all that torque steer on my car and find 2nd gear hard to use at hpde events. installing a dizzy map and hope that helps. thanks again for letting me check out the s280. also tune plus did a great job making the car feel oem. I think this would be a good setup for hpde and maybe make 2nd gear more useable.
Well if you analyze charts like I did you will discover that the S280 pretty much runs neck and neck with the stock Turbo till around 3k. The one difference is it has a 50lb TQ dip between 2200-2500 rpm vs stock. That is what I think makes it so manageable in the bottom end. Now once you get above 3k if you nail it will go fast I mean really fast.



Agreed. Its way easier to put power down, it pulls like a na motor once in boost with the powerband now and being able to keep the tires from spinning is a big plus for me. Keeps on chuggin along to 7K. Fourth gear 7K might get ya into some trouble if caught lol. And its not really fast enough to be “fuck it i wont catch him” speed as ive experienced in other cars lol.
Actually I can attest to if I hit the power band above 3500 its hard to keep up with me. I mean the car moves I leave people in the dust from a roll on the freeway. Its also very fast on the straights in the Canyons . Of course I am one of those drivers that keeps the revs up . Which is one of the reasons I like this Turbo I am constantly in power in the Canyons.
 


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#95
Lots of very useful info here about heat management and the importance of cooling. The difference between hybrid & TTs280 torque curve and how that power comes into play during Daily Drive vs Autocross. Even got some info on MPG which is important for those who's FiST is they're main Source of transportation. But where is the input of the Big Turbo gals/guys? How does the torque curve differ for a Gtx2860 vs a G25-550? What kinda donkey punch does a Gtx2867 W/Aux fuel produce? Do you feel a difference in throttle response from your gtx2860 with tubular manifold vs OEM? What kinda Mpg are you getting with E85 and a big turbo?
 


dhminer

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#96
Lots of very useful info here about heat management and the importance of cooling. The difference between hybrid & TTs280 torque curve and how that power comes into play during Daily Drive vs Autocross. Even got some info on MPG which is important for those who's FiST is they're main Source of transportation. But where is the input of the Big Turbo gals/guys? How does the torque curve differ for a Gtx2860 vs a G25-550? What kinda donkey punch does a Gtx2867 W/Aux fuel produce? Do you feel a difference in throttle response from your gtx2860 with tubular manifold vs OEM? What kinda Mpg are you getting with E85 and a big turbo?
Have a 2860 Gen 2 with tubular manifold. Can’t say about the throttle response because I never had the turbo installed without the manifold, but it pulls like hell from 4800-7k. Below that it’s pretty tame. Comparing my logs to @xxiaze who has a g25-550 and tubular manifold, he spools earlier but torque curves are both very similar and there’s no “donkey kick” whatsoever. Don’t ask me about gas mileage, it’s probably single digits or close to it. I drive the Fiesta 2k miles a year and wring it out for most of those.
 


xxiaze

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#97
Lots of very useful info here about heat management and the importance of cooling. The difference between hybrid & TTs280 torque curve and how that power comes into play during Daily Drive vs Autocross. Even got some info on MPG which is important for those who's FiST is they're main Source of transportation. But where is the input of the Big Turbo gals/guys? How does the torque curve differ for a Gtx2860 vs a G25-550? What kinda donkey punch does a Gtx2867 W/Aux fuel produce? Do you feel a difference in throttle response from your gtx2860 with tubular manifold vs OEM? What kinda Mpg are you getting with E85 and a big turbo?
I have a Peron STG4 G25-550 setup, and all supporting mods. Uprated LPFP and 4 port stratified auxiliary fuel. Have the ability to run straight e85 but was having knock corrections due to excessive cylinder flooding so had to dial back to e50. I see positive boost around 3200RPM and peak boost at about 38-3900rpm. When I was running straight e85 pump gas (e75) I was seeing 19mpg avg and with 93 was seeing 26mpg - now running exclusively e50 I see around 21mpg avg. Granted I drive the car for smiles and not chasing mpg figures. I can’t completely speak to power figures yet because I’m still tuning it out… long process. I will say that without additional fueling the hybrids and s280 are a superior choice for many reasons. My final 93 numbers WITHOUT aux fuel were very mild… 275whp 300tq or so if I recall correctly. I would also strongly speak against using 4port injection. It doesn’t do the best job and is hard to tune precisely. If I was to do it all over I wouldn’t change anything but the fueling. Certainly go with the HPFP upgrade and uprated injectors.

Here are 3 overlayed pulls on the same revision working out auxiliary fuel now… just for you to observe the curve etc. Still mild boost and timing until corrections resolved.
 


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#98
Well if you analyze charts like I did you will discover that the S280 pretty much runs neck and neck with the stock Turbo till around 3k. The one difference is it has a 50lb TQ dip between 2200-2500 rpm vs stock. That is what I think makes it so manageable in the bottom end. Now once you get above 3k if you nail it will go fast I mean really fast.





Actually I can attest to if I hit the power band above 3500 its hard to keep up with me. I mean the car moves I leave people in the dust from a roll on the freeway. Its also very fast on the straights in the Canyons . Of course I am one of those drivers that keeps the revs up . Which is one of the reasons I like this Turbo I am constantly in power in the Canyons.
Lol i should have clarified “ fuck it i wont catch him”-cop
 


Dpro

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#99
Lol i should have clarified “ fuck it i wont catch him”-cop
Oh I know what you mean. I used to have a RB25DET powered S13 240sx and the car was fast as fuck and totally linear. It just pulled like a super strong NA motor. That car was putting out 300whp and like 350 ft lbs TQ. It was a monster. Its funny because the S280 is totally a Jeckle Hyde setup. You can drive it around at quarter throttle and it will be quick but not like oh my god but if you just stomp on it then it flies all over the place and pulls like an angry pit bull.

Oh and yes I tested that out this evening just to remind myself. Driving it around town I sometimes forget its actually fast. Or maybe I am just really getting used to it? :unsure::ROFLMAO:
 


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Oh I know what you mean. I used to have a RB25DET powered S13 240sx and the car was fast as fuck and totally linear. It just pulled like a super strong NA motor. That car was putting out 300whp and like 350 ft lbs TQ. It was a monster. Its funny because the S280 is totally a Jeckle Hyde setup. You can drive it around at quarter throttle and it will be quick but not like oh my god but if you just stomp on it then it flies all over the place and pulls like an angry pit bull.

Oh and yes I tested that out this evening just to remind myself. Driving it around town I sometimes forget its actually fast. Or maybe I am just really getting used to it? :unsure::ROFLMAO:
Rb’s and inline 6’s-the sound of my people haha. Im very lucky to call a couple 1xxxhp r32’s my friends and as im sure you know~ nothing like a rb screaming to 9k haha.
Sure the fiesta s280 is “fast” for its platform, but i continue to get reminded of what real power feels like. Then i get back into the fiesta with my tail between my legs, driving like a grandma because it feels like a fucking snail LOL
 


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