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FP-Bigt28

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mattspyder

15+ Year Contributor
1,046
2
Nov 2, 2004
del taco, Wisconsin
Does anyone know if the fp big t28 has the same install set up as the t-25. Reason I ask is because I used to have the t-25 on but I cut the lines to the turbo so I could put in my t04b vtrim. Well now I want to put on a t-28 but didnt know what to do about the lines that i have cut, Or does this turbo hook up like a evo III big 16g??
 
It hooks up the same as the T25. I changed or moved nothing when installing mine.
 
It hooks up the same as the T25. I changed or moved nothing when installing mine.

The T28 installs just like a T25.



Agreed. Outwardly it is identical to the T25.

I know my input wasn't necessary at this point but I just had to try something out in the method that I used to post. Anthony knows what I'm talking about.;)
It worked!:D
 
That comparison has been done a tonn of times on here, do a little searching & you will find the answers your looking for. You will be able to make more power with the evoIII but the T28 will spool faster. IMO I wouldn't bother with the T28 as I even grew tired of the evoIII as far as power goes. Super fast spool isn't your friend in a fwd so personally I wouldn't look at a T28.
 
right I understand. I knew the evoIII was rated better but I just wanted to know which one would be easier to install, because I'm trying to go back to stock thats why Im putting my 550's back in and wondered if 550s went well with the evoIII
 
T28 is THE easiest aftermarket turbo to install on a 2G bar none.

That comparison has been done a tonn of times on here, do a little searching & you will find the answers your looking for. You will be able to make more power with the evoIII but the T28 will spool faster. IMO I wouldn't bother with the T28 as I even grew tired of the evoIII as far as power goes. Super fast spool isn't your friend in a fwd so personally I wouldn't look at a T28.

I don't agree. I had a BT28 for 3 years and the spool up is about 2800 vs 2500 on T25. Even near 300whp wheel spin isn't that bad on fwd with a T28. It is way way WAY worse on my 50 trim and I don't even have it tuned yet. T28 is a great turbo and a lot of fun to drive every day if you like to boost everywhere. Not to mention, he has a dual stage mbc anyway.
 
Yeah the T28 is a very nice turbo. This is taken from FP's website:

Our goal with the FP-Big28 was similar to its FP-T28/28 predecessor… to create a fast spooling, bolt on turbo that got up and went. We wanted to give the FP-Big28 a little more "umph" than the T-28, but when we strapped one on a 2G AWD and took it to the track, the results knocked us on our ass. At 21psi, the FP-Big28 pulled our full weight 99 GSX to an [email protected].

Its a very potent turbo and I wouldnt look down on it.
 
Yeah the T28 is a very nice turbo. This is taken from FP's website:

Our goal with the FP-Big28 was similar to its FP-T28/28 predecessor… to create a fast spooling, bolt on turbo that got up and went. We wanted to give the FP-Big28 a little more "umph" than the T-28, but when we strapped one on a 2G AWD and took it to the track, the results knocked us on our ass. At 21psi, the FP-Big28 pulled our full weight 99 GSX to an [email protected].

Its a very potent turbo and I wouldnt look down on it.


Amen.:thumb:
 
Yeah the T28 is a very nice turbo. This is taken from FP's website:

Our goal with the FP-Big28 was similar to its FP-T28/28 predecessor... to create a fast spooling, bolt on turbo that got up and went. We wanted to give the FP-Big28 a little more "umph" than the T-28, but when we strapped one on a 2G AWD and took it to the track, the results knocked us on our ass. At 21psi, the FP-Big28 pulled our full weight 99 GSX to an [email protected].

Its a very potent turbo and I wouldnt look down on it.

I'm not knocking the T28 in anyway, but I don't think those are your typical tuners results, but then again I guess I could be wrong....

To the OP, if your just looking for easier to install the T28 would be the way to go.

Rice Over Wheat, not specific to the T28 but any turbo that spools that fast & makes a good amount of power is never the best idea on a fwd. Sure with the proper setup you can control it but something with a slower spool is always going to help you out in the traction department. The 50 trim probably is alot worse for traction because your probably making more power. If your fully spooled (& running a descent amount of boost) at sub 3000 rpm's & not having any spin issues, your probably just not making enough power for it to be an issue.
 
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That's my point. I was around 300whp on my AGP BT28 with 17psi actuator @ 22 psi, pretty much the max I could push that turbo on water/meth injection. There was minimal wheel hop as I have a decent setup that could handle anything that turbo could throw at it. That's about the limit for most T28s other than those freak garrett bb T28 0.70 turbos you find on silvias. And check this out, I even had minimal wheel hop when I was running on 3 broke motor mounts and just the front one intact. The rear's steel brace to the head was cracked in half! My engine bucked like mad and it still wasn't that bad. T28 just can't sustain the torque curve that a 50 trim size turbo can. But it was a GREAT turbo for my fwd. More fun than the 50 trim imo. I won't be going bigger than this and now I need an lsd.

The thing with the T28 I had is the spool is so fast it kicks you back in the seat, but then the power tapers off quick. The 50 trim doesn't kick me back but builds and pulls all the way to 8000 non stop. Funny that when I first drove my new 50 trim I was thinking...is this really a lot faster? And it was, but the T28 felt faster in a way because the boost hit full force so quick, but again it fell off a lot sooner. I kind of like driving a T28 more. Not to mention I can never enjoy my 50 trim because it gets me to illegal speeds so fast. T28 was just joy.
 
Ok lets say I do go back to the T28. How would I get the stock lines back. because remember I cut my ones from the t25. I have a setup for the t04b vtrim right now. I Know oil return line wont be a big deal but what about the oil feed line. I got the stainless steel line going going to the top of the turbine housing


Ok wow I just realized that I have stock fuel Injectors that Im putting back in which are 450s not 550s. Are cars dont come with 550s stock do they. wow So would 450s support the evo III big 16 I know it would support the t28.
 
Yeah you could run the turbo with stock injectors if you arent planning on running alot of boost. I think I found the limitations of the stock injectors and my T28 to be around 16psi. Keep in mind the big T28 flows more than a big 16g so its kinda close to the evo as far as flow goes. I would pick up some 550's just to be safe, I never like to push my luck.
 
If retaining the stock appearance is a primary concern then the T28 is the only upgrade that will work as far as I know. Compared to the EVO 3 it sounds like the power curve is shifted to the left so peak hp and tq should arrive a little sooner but will likely fall off a little sooner.

The EVO 3 is significantly cheaper and is generally considered to pull a little harder through the top end. Both are regarded as very good street turbos.

Either way if you use the stock 450cc injectors you will not be able to extract anywhere near the full potential of the turbos making the upgrade kind of pointless IMO.
 
right, i have the 650s in right now but im thinking they might even be over kill for the evoIII I dont want to have to pull a shit load of fuel out. so I might just get a good pair of 550s and tune it as good as I can. shouldnt be to bad.
 
Actually your current injectors are perfect for either the EVO 3 or the Big T28. Both turbos are capable of flowing enough air to surpass the limits of the 550's. You can use the 550's and they will be easier to tune with if you will be using a SAFC. But the larger injectors will allow you to extract the maximum potential of the turbos.

What have you been using to control the 650's?

You know, you're a little confusing in what exactly you wan't to do.:confused: :p
 
haha I know I know, its because people put in there 2 cents and then I start thinking and then I just drift off into wonder land.
Im using my safc II and palm to log and tun it

I feel better if I went with a smaller Injector that way I can tune it easier. cus right now its a pain in the ass to tune my to4b vtrim with these 650s
 
Anyone else think they've seen Matt's "Dizzum" anywhere?





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I feel better if I went with a smaller Injector that way I can tune it easier. cus right now its a pain in the ass to tune my to4b vtrim with these 650s

Understandable. Getting max power out of these turbos on a FWD can create other challenges anyways. I have 550's with my EVO 3 and an upgraded SMIC. On 92 octane I can safely run 18 psi which makes for a pretty fun daily driver. Hope that helps.
 
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