Resolved Forced Performance Big 28?

[GSX99Ca]

First off i want to thank you guys for the reply about the S20G, and made my mind up and decided not to get it. I have now been looking at Forced Performance Big 28. So i need opinions about this turbo from anyone that has/had it. once again i have a '99 GSX. I need a daily driver turbo, and can also run on 91 octane. Thx again

 

[EVIL X]

I've owned a fpbig28 and It was a nice turbo. If you were planning on upgrading shortly, then I would just skip it and get something bigger. But it was definatly a quick spooling turbo that replaced a worn out abused t-25. If you have any goals higher then about 320 whp then just go with something with more room to work with.

 

[heavyD]

Get an EVOIII 16G. For almost the same price as the T28 you can have an EVOIII 16G and a 2G install kit. I have an FP28 and I like it so much I took it off my Eclipse after less than one year and replaced it.

 

[dhonda]

I am in Fullerton. PM me and I will take you for a ride with it on. I don't have AFC or injectors yet, but it will give you an idea.

 

[1993eclipseGS]

Get an EVOIII 16G. For almost the same price as the T28 you can have an EVOIII 16G and a 2G install kit. I have an FP28 and I like it so much I took it off my Eclipse after less than one year and replaced it.

If you're going to spend that much on a turbo, And an install kit..

I have a direct bolt on t04b "v-trim" with less then 200miles. I parted out my car, I have the reciepts that showed I paid 850.00 for everything. It comes with ss return line, 2 1/2" lower intercooler piping, gaskets.. I'm only selling it for $725.00 shipped or picked up right from my house. It's basically brand new, and polished. I have alot of pictures. It is very streetable.

 

[KAOTIC95gst]

i have fpb28 and it was a good upgrade from the small t-25 and the install a cinch. it pulls all the way to redline. very pleased, but will soon have the vtrim

 

[djsven]

Hi,

I had a FP Big T28 and I was dissapointed. I would recommend a 50 trim for daily driven cars. They make the best amount of HP on pump gas and be very streetable. And you can get them for around the same price. My friend had a agp L2R and now is changing over to a AGP RS49. He loves the 50 trims.

Sven

 

[pboglio]

First off i want to thank you guys for the reply about the S20G, and made my mind up and decided not to get it. I have now been looking at Forced Performance Big 28. So i need opinions about this turbo from anyone that has/had it. once again i have a '99 GSX. I need a daily driver turbo, and can also run on 91 octane. Thx again

I have the FPt28/28, identical turbo to the FPBig28 except for the turbine wheel. Very good turbo, highly reliable. Buy the Forced Performance 17psi wastegate actuator if you want the turbo to hold any kind of boost, its a must. I've got 60,000 miles and 5 years of abuse on it with 20psi pump gas daily, still running strong. With your mods right now a bigger turbo would be a waste of time, you'll just incur more lag with minimal power advantage if any. The T28 will hold 24 psi in the midrange and 21 psi or so near redline with the 17psi wastegate actuator. It spools up to 18 psi by about 3000-3200 rpm or so, full torque hitting hard right around 3400-3700 rpm.

The T28 likes operating at anything above 2800-3000 rpm, below 2500 you get some compressor surge. Turbo levels off in airflow right around 6000 rpm or so, dropping the boost down a bit near redline. I'd have to say 320-330 w.h.p. max on pump gas and 20 psi based on my datalogs, maybe 340 w.h.p. with 22 psi and race fuel.

 

[Jaraxle]

The reason you need a 17psi actuator is because there is no such thing as a T-28.
T-28 is the term used for a T3 compressor mated to a t-25 turbine. Small t-25 turbine = exhaust can't get out = too much pressure on wastegate.... Which is why one needs the larger (17psi) wastegate spring. So the end result is a lot of backpressure in the exhaust manifold which will lead to reversion (exhaust going back into combustion chamber), which leads to detonation, which leads to broken parts.

Stay away from any turbine housing smaller than a 7cm2/td05 for upgrading.
Just my 2 cents.

-Jaraxle

FYI: evo 16g comes with a 13psi spring but has no problems running 20+ psi

 

[Nanan]

[rant]
Like some of the others have said, go with an Evo3 Big16g. I have a FP t28 atm and I am very disapointed in it. FP claims the turbo has quick spool up and will hold the boost longer in the rpm range, in testing the turbo doesnt really spool till about 3.5-4k, it surges alot pre 3k rpm, and it still drops off on boost from 6.5k+. This turbo also really sucks for boost creep due to the small as hell turbine housing of the t25. I guess if you hogged the crap out of the turbine housing it might help. If you plan on going beyond 13.5's then skip the t28, you will very quickly max out this turbo well before you need to go into higher level mods.
[/rant]

 

[daren_p]

[rant]
Like some of the others have said, go with an Evo3 Big16g. I have a FP t28 atm and I am very disapointed in it. FP claims the turbo has quick spool up and will hold the boost longer in the rpm range, in testing the turbo doesnt really spool till about 3.5-4k, it surges alot pre 3k rpm, and it still drops off on boost from 6.5k+. This turbo also really sucks for boost creep due to the small as hell turbine housing of the t25. I guess if you hogged the crap out of the turbine housing it might help. If you plan on going beyond 13.5's then skip the t28, you will very quickly max out this turbo well before you need to go into higher level mods.
[/rant]

It doesn't look like you have exhaust listed in ur profile. If your still running the stock exhaust this could be why its taking longer then normal for your t28 to spool & also why boost is dropping off at the high rpms.

 

[Nanan]

Yea I have not updated the profile in a while, 3" turbo back exhaust.

 

[matt97gst]

Being a bigt28 owner I say get a 16g. Anyone who has switched from a bigt28 to a 16g would agree. Most FMIC kits aren't tailored with the t28 in mind also. But like everyone else says, whatever you get, you'll eventually want something bigger even if you really feel you don't right now.

 

[daren_p]

I'm with some of the other guys, go with the EVOIII over the t28 same amount of money but a better performing turbo. About the same spool up as the t28 but more hp potential and flows much better in the top end.

 

[Rick4g63]

I would go with the frankenstein 50 trim compressor wheel. It can support 500 hp.

http://www.turbochargers.com/Turbos/TurboUpgrades/Eliminator.htm

It is oil and water cooled. Exact replacement fit.

 

[daren_p]

I would go with the frankenstein 50 trim compressor wheel. It can support 500 hp.

http://www.turbochargers.com/Turbos/TurboUpgrades/Eliminator.htm

It is oil and water cooled. Exact replacement fit.

For the price of that turbo I think there alot better choices out there. Plus I don't think he's looking for 500hp.

 

[slickster]

I just replaced ny FPBig28 for a SCM50. I was worried about lagging but i actually like that the car doesnt jerk so damn bad like when the 28 spooled up. The difference in power and pull are miles apart. Don't be afraid of bigger turbo's.
I will say that the Big 28 did pull much more noticably than stock and didnt run out, but it still is a quote smaller turbo. I have had this scm50 on for about 3 weeks and loving it. I'm glad though that i had another turbo before so i can appreciate the difference. I drive my car every day and love it better daily driving than with the 28. Im shifting before spooling good, so the car isnt lurching forward right before every shift. The power now comes on much more smooth but pulls like silly. I actually prefer this. Some people talk about lag like you will feel like your pulling a towtruck before your turbo spools.......untrue. It is noticeable but you will quickly forget about it.
Stock Big28 scm50 :laugh:
I'm sure there are many other great turbo's out and im not saying the scm50 is the best, but it does everything i have been hoping for. People get in my car now and when i get on it now all i hear is "Holy Sh*t!"

 

[Rick4g63]

For the price of that turbo I think there alot better choices out there. Plus I don't think he's looking for 500hp.

Yes much better choices out there, but this is a bolt on, stock looking replacement. when e replace his stock turbo, he WILL want more power after a while, so knowing you support 500hp of airflow is a wonderful feeling.

My choices of turbos are:
- TC Eliminator T-28 with frankenstein CW
- FP 3065
- DSMparts 20G

 

[pboglio]

The FPBig28 is what it is; very fast spooling, very hard hitting , very durable (oil & water cooling, 360* thrust bearing), flows 370-380 h.p., with stock install and fit.

People fail to mention that a bigger turbo if used to it fullest requires some serious strengthening and upgrading of both the engine and drivetrain if you want things to be reliable. Why not run a small non-engine destroying turbo now with limited mods and enjoy the quick hard hitting torque. Then later on buy that huge turbo when all of the supporting mods are in position. If you have the money to upgrade all of the engine and transmission weak points, buying a turbo twice is a triviality.

Some people can tolerate a lot of lag and an unresponsive engine, other people hate it. Its totally a personal preference. I think the lag of the T28 is just about the limit for me, but thats me. I'd also recommend the EVOIII 16g.

edit: Just looked at a few DSMLINK datalogs for spoolup comparisons. A value of 2.2 g/rev is supposed to be like 15 psi of boost or roughly 220-230 lb-ft of torque. A T25 hits 2.2 g/rev by 2719 rpm, my small T28 hits 2.2 g/rev by 2967 rpm, an EVOIII 16g hits 2.2 g/rev by 3000 rpm, a 20g-TD06 turbine hits 2.2 g/rev by 3397 rpm, and a 50 trim hits 2.2 g/rev by 3565 rpm.

 

[slickster]

The FPBig28 is what it is; very fast spooling, very hard hitting , very durable (oil & water cooling, 360* thrust bearing), flows 370-380 h.p., with stock install and fit.

"[I]Agreed[/I]"

People fail to mention that a bigger turbo if used to it fullest requires some serious strengthening and upgrading of both the engine and drivetrain if you want things to be reliable.

"Used to it's fullest? What turbo...anything bigger than a Big28? Really????

Why not run a small non-engine destroying turbo now with limited mods and enjoy the quick hard hitting torque.

"What kind of engine do you have?"

Then later on buy that huge turbo when all of the supporting mods are in position. If you have the money to upgrade all of the engine and transmission weak points, buying a turbo twice is a triviality.

"When buying a Big28 upgrade, you really need injectors, better sidemount or just maybe a front mount, some way to control the injectors via safc/dsmchip, usually a better clutch, exhaust upgrades, etc. So if you want to simply just replace your stocker because it's dead or something or you just want to buy a turbo for the hell of it and not use its potential, then maybe you wont need the above mentioned mods. But when replacing a turbo to any size, you truly need a system overhaul. Do people do it anyway....sure. My point was simply, that i dont think (given you are going to get the most out of whatever turbo you get) is that the jump to a bigger turbo isnt that far away. If you only plan on slapping on a turbo, and being done, then forget about what i just wrote. "

Some people can tolerate a lot of lag and an unresponsive engine, other people hate it. Its totally a personal preference. I think the lag of the T28 is just about the limit for me, but thats me. I'd also recommend the EVOIII 16g.

"I am by no means trying to sound like an ass, i just hope that people who comment on turbo's and lag, are giving out data from personal experience and not just regurgitating what they have read from somewhere else. Lag of a t28.....too much??? My scm50 hits 21psi of boost by 4K,...who races below 4k???? And on the opposite side, who daily drives worried about boost response any sooner.
To each his own.....i was worried about lag, that's why i started with a big28, ....let's just say i now know why i own this car. Good Luck to everyone with what they want their car to be,..everyone has opinions, and i hope mine was taken without aggression and someone benefited in some way. "
My 2 cents.

 

[pboglio]

A laggier turbo makes for a better daily driver? Glad your not working on my car. There is a thing called a throttle, lighten up on it if you don't want more boost. Never heard of somebody wanting to get rid of throttle or boost response before, more of a compromise for higher top end flow.

GSX99Ca already mentioned he has decided not to buy a 20g, why would he now consider a 50 trim? The question he asked was what people thought about the T28. I haven't heard a single person mention a bad thing about the T28 other than it doesn't make enough power. He's not even close to being able to utilize a 50trim, nowhere near. No shit a 50 trim makes more power, but 600 rpm worth of lag above and beyond the T28 is the price. Only he can decide whether its worth it or not.

When a 50 trim spools as fast as a T28 or EVOIII 16g and can actually hold together for more than 15,000 miles, then I'll go door to door recommending it.

 

[Jaraxle]

The bad thing about the T-28 is that it uses the T-25 turbine housing. FP helps the situation by using newer GT turbine wheel to help with that bottle-neck. The turbine housing wasn't designed for over 250hp or so. Call Majestic or other big-time turbo builders/rebuilders. Also the compressor cover is the stock T-25, with a T3 size wheel stuffed in it. This affects the overall effeciency of the compressor. The shaft is also a small T2 type. FP helps the situation with 360deg thrust bearings. So overall it is a beefed up T-25, but still T-25 based. Small compressor housing, tiny turbine housing (very important!), and small shaft size (need I say anything about that).
I would not consider it, when there are 16g's of various varieties and even ones with j-pipes for easy installation.


-Jaraxle

 

[slickster]

A laggier turbo makes for a better daily driver? Glad your not working on my car. There is a thing called a throttle, lighten up on it if you don't want more boost. Never heard of somebody wanting to get rid of throttle or boost response before, more of a compromise for higher top end flow.



GSX99Ca already mentioned he has decided not to buy a 20g, why would he now consider a 50 trim? The question he asked was what people thought about the T28. I haven't heard a single person mention a bad thing about the T28 other than it doesn't make enough power. He's not even close to being able to utilize a 50trim, nowhere near. No shit a 50 trim makes more power, but 600 rpm worth of lag above and beyond the T28 is the price. Only he can decide whether its worth it or not.

When a 50 trim spools as fast as a T28 or EVOIII 16g and can actually hold together for more than 15,000 miles, then I'll go door to door recommending it.

Didn't mean to hurt your feelings pudding.
First of all, im not into racing from street light to streetlight, so yeah i like this turbo better. I was just trying to give some insight into his decision because i was where he is right now. I bit into this notion of this hideous monster called "lag". It's not that big of a deal.....really. I am by no means saying that the big28 is a bad turbo. I just would have liked some true insight from experienced people when i first started....thought he might to. Like i finished before, good luck to everyone no matter what there goals are....to each his own.
My comments are done in ths thread, dont want to muck it up for the original guy...just trying to help. GSX99Ca, if you have any questions about either turbo mentioned feel free to pm me and i'll be happy to help. Good Luck.

 

[RREDix]

Hi guys,

I just got my eclipse last month with a t28-killer turbo from Immortalspyder( if you want to see all the mods check out his profile), and being that it is my first turbo I love it. It hits 15 psi before 3000 rpms and pulls strong all the way to red. If you chose to get it i just suggest some good tires because it puts down torque quick. I just want a front mount and I'll be pretty satisfied for a while.

 

[Generation X]

I would just look at dsmtimes.org to decide what you want. Although... my FP ported Big28 kicks ass with HKS 264/272 cams, let alone the 75 wet shot that I throw at it.