fpbig28 or big 16g turbo

[sethtroy]

i was wondering if anyone could help with what turbo is better for street. i have a gst with a lot of mods. i have a fpbig28 on right now, but was thinkking of upgrading to a big 16g would it be worth it or not. i got a dyno tune and it put 246 to the wheels and that was comming right off the freeway in 110 degree weather. would i see better numbers with a big 16g or would it be a waste of money. thanks for any help

 

[Groomz]

The two turbo's are too similar to swap from one to the other. I would think that you might be able to squeeze 10hp more out of a B16G, but thats a maybe. Sounds like you're ready to go 50 trim. I would recommend a PTE 50 trim turbo or a 20G of some kind.


Factory T25 < FPbigT28 ( You are here, duh ) < 50 trim size turbo or bigger


( Felt like making a super cool diagram, hope it helps! )

Good luck and let us know what you go with.

Here are a few sites to look at:

www.diamondstarmotorsport.com
www.slowboyracing.com
www.forcedperformance.net
Anyone else in the Sponsors forum

 

[Libila]

Only 246 with all that? Doesnt sound right....

 

[candela]

Get a 3" turbo back and watch an see your HP jump up at leist 25whp.... if you already have that and its not listed in your profile; you are lacking dude. Try tuning, cause with 91 and ~16-19psi you should be able to put down at leist 260awhp... good luck

 

[AlecW81]

I see his car as a 99GST, i.e. FWD. But I would definitly go for something larger than a 16G. Might want to think about going Garrett, true you have to change a few things to run em' but you have a lot more options. The T3/T4 variations out there are more than enough for what you need. And you can get Garretts for a lot cheaper than most Hybrids. Check RNR Racing, contact Ryan there, they're having a HUGE sale on T3/T4s...

 

[13secGST]

pointless to upgrade to a big16g now...sure it'll be a little better...but not so much that you will be happy you "wasted" your money on it.

 

[ShapeGSX]

You will definitely get more power out of an Evo 16G. I'm flowing 44lbs/min of air with mine. I ran 118mph with it at 26psi. It is one hell of a turbo. I got mine from Forced Performance.

Add it up. 118mph in a full weight 2G AWD (3315lb race weight) is probably around 425hp at the crank.

 

[tqlla]

Wait a sec! What do you need to run 26lbs of boost?.

I went to they dyno last(with some boost and oil leaks) and I dynoed at 266@18lbs, and I have the ETE32. A stock 2G 3000GT VR4 dynos at 227 on that dyno.

 

[ShapeGSX]

I have:
Evo III Big 16G
RRE Griffen 18" FMIC
3" turbo-back exhaust
K&N FIPK
1G BOV
2.5" custom IC pipes
550s
DSMLink
Walbro 255
HKS 264 cams
1G head/intake manifold
2G pistons
6-bolt block/big rods

Oh, and 117 octane race gas.

That is about it. 26psi, 118mph in the 1/4. Stock weight.

 

[raylaf]

Dont do the t3/t4 route, way too much fabrication and hassle to make it fit.

The I'd check out the FP3052 turbo, they have the new 44mm Tial gates with them now. That way you won't need to ever upgrade again.

 

[99gst_racer]

I you want to make alot more power than the Big28 offers, then you probably wont be happy with just a 16G. I reccomend the 18G or even the 20G (but that must be externally gated, which it even more expensive) Go to www.Forcedperformance.net They are good to buy from.

 

[DSMJim]

Originally posted by raylaf
Dont do the t3/t4 route, way too much fabrication and hassle to make it fit.

The I'd check out the FP3052 turbo, they have the new 44mm Tial gates with them now. That way you won't need to ever upgrade again.

I really like the FP3052 as well, but the T3/T4 route is not much hassle at all. If making up an intercooler pipe or a downpipe scares you then yeah it might be a bit of hassle, however doing a little custom fab of your own is really easy.

You can just pay a shop to do it for you, or you can buy the pipes and cut them at home and fit them up holding them together with duct-tape. Then just take them to a welding shop in your area (trust me there are lots) and have them weld the pipes up for you. Bring them back home, test fit and paint. Piece of cake. Not sure what other fabrication your speaking of?

I personally get a lot more satisfication knowing that I made my own intercooler pipes and my entire exhaust system including downpipe all the way back to the muffler myself.

 

[Generation X]

The FP Big28 is a very capable turbo in the right hands obviously, especially from looking at Dennis Grants latest dyno graph with the NEW FP 17lb wastegate actuator upgrade that he installed on his FP Big28. DG made 348hp and 376ft. lbs of torque at the wheels without the help of cams. That's roughly 400 hp at the crank, which IMO is awesome for a turbo of that size.

 

[ShapeGSX]

Originally posted by Generation X
The FP Big28 is a very capable turbo in the right hands obviously, especially from looking at Dennis Grants latest dyno graph with the NEW FP 17lb wastegate actuator upgrade that he installed on his FP Big28. DG made 348hp and 376ft. lbs of torque at the wheels without the help of cams. That's roughly 400 hp at the crank, which IMO is awesome for a turbo of that size.

Yeah, 348hp is very good for that turbo.FP can put together a good one. But the Evo 16G simply has more potential. It has a tiny bit more lag though, but it is barely even noticable.

 

[lowridin2g]

im going to be going the fp big 28 route, most likely ill be buying the slowboy racing big ported 28 though. i highly agree that 246 to the wheels sounds shy. possibly a small boost leak somewhere. anyway i havent even checked your mod list yet. i will do that now.

anyway my setup will consist of the big 28 ported, 550 cc's, walbro 255 lph, safc 2, greddy fmic kit, and a slowboyracing slim 14" radiator fan. plus the mods i got now im planning on being up close to 300 to the wheels, possibly 285ish at 16 psi .

*edit* u def need to open up that exhaust man. how high are your friggin egt's? also your starving that turbo of more power with stock exhaust.

 

[Generation X]

Originally posted by ShapeGSX
Yeah, 348hp is very good for that turbo.FP can put together a good one. But the Evo 16G simply has more potential. It has a tiny bit more lag though, but it is barely even noticable.

Just curious bro... how do you see that the Evo 16g has more potential? I think they are very close in performance IMO. Robert at FP ran an 11.8 @ 119 with the FP Big28 while just boosting 21psi, and did so with just about the same mods that you have, a la 1g tb, 1g intake manifold, and 1g head. Those mods will make a pretty decent gain in it's self for topend flow on a 2g, especially if your running a set of HKS cams.

 

[ShapeGSX]

Originally posted by Generation X
Just curious bro... how do you see that the Evo 16g has more potential? I think they are very close in performance IMO. Robert at FP ran an 11.8 @ 119 with the FP Big28 while just boosting 21psi, and did so with just about the same mods that you have, a la 1g tb, 1g intake manifold, and 1g head. Those mods will make a pretty decent gain in it's self for topend flow on a 2g, especially if your running a set of HKS cams.

That wasn't Robert that ran that time. It was Loren. And his car always went really fast for the mods he had. I'm certain that with a 16G, he would have gone even faster.

And a time or mph like that hasn't been duplicated since, whereas lots of people have run 11s on 16Gs.

 

[Generation X]

Originally posted by ShapeGSX
That wasn't Robert that ran that time. It was Loren. And his car always went really fast for the mods he had. I'm certain that with a 16G, he would have gone even faster.

And a time or mph like that hasn't been duplicated since, whereas lots of people have run 11s on 16Gs.

My bad I meant Loren. Anyways... Brian at FP ran a 13.0 @ 115 with the Big28, and with the same mods as Lorens on his fwd at the time, so I don't think Lorens car was that much more of a freak than Brians, plus there basically shop cars anyways so theres going to be a difference compared to the average Big28 tuned car that's out there. I have talked with Brian at FP several times, and he has told me that his traps would have been even higher if he hadn't have spun half way down the track. He has also told me that he could pull Lorens GSX on the highway even though Loren trapped at 119 to Brians 115 at the strip. Also.. another thing that you have to keep in mind is, that 16g's have been out for over 10 years now. That's alot of time for plenty of tuners to extract every ounce of power out of the 16g as they possibly can as compared to the Big28 that's only been out now for about 2 years. Plus there is a whole hellava lot more 16g's out there compared to Big28's, and most of the fastest 16g'd powered cars that are out there are 1g's, and that is because of the over all lighter weight of the car compared to a 2g, as well as a better flowing tb, intake manifold, and head. I would be willing to bet that a 2g Big28, AGP T28/T28, or even a Big28 Killer powered car equipped with a 1g tb, intake manifold, and head would be neck and neck with a 2g 16g powered car equipped with the same components nine times out of ten. For what amount of Big28's that are out there right now, there have been several that's run 107 to 112 traps without cams. I know because I have talked with several of them that have there times posted over at the DSMtimes.org list. A little off topic here but, I also have a buddy on the forums that has a 96 talon tsi awd that goes by "whatturbo" we did several pulls on the highway. He has a TRE ported and clipped 18g, he's fully modded with fmic, 650's, DSMlink etc. I have a ported FP Big28 with supporting mods including fmic, 550's, s-afc etc. I don't even have a logging device as of yet, so I'm very untuned compared to him. We were both running 20psi at the time. Anyways.. we did two 3rd gear pulls and one 4th gear pull and I pulled on him by two car lengths everytime. I'm even still on my 78,000 mile stock slipping clutch. He ran a 12.8 @ 106 at Bristol Dragway awhile back, and I believe Bristol is about 2000ft above sea level. I know were talking 16g power here but I'm just giving an example. To me it's a very close comparison, and in my opinion if I had it to do all over again I would have probably gone with a FP green or a PTE 50 trim just because of the big power that you can make on pump gas, but that is another story. Sorry for the long post. Peace!!

 

[ShapeGSX]

Seriously, talk to Brian at FP. He will tell you that the Evo 16G will make more power than a Big28. There is no way that a Big28 will push 44lb/min of air or hold 26psi. The Evo III 16G is closer in flow to an 18G than it is to a regular 16G.

My car wasn't even tuned terribly well when I ran 118. I think there is more in it. Stupid winter.

 

[Generation X]

Originally posted by ShapeGSX
Seriously, talk to Brian at FP. He will tell you that the Evo 16G will make more power than a Big28. There is no way that a Big28 will push 44lb/min of air or hold 26psi. The Evo III 16G is closer in flow to an 18G than it is to a regular 16G.

My car wasn't even tuned terribly well when I ran 118. I think there is more in it. Stupid winter.

Well.. maybe I'm thinking of the regular Big 16g then. I'm assuming that the EVO Big16g flows a little more than just the standard Big 16g if I'm reading you correctly. If that is the case then I'm not sure if the original person that started this thread is referring to the regular Big 16g or the Evo Big16g. Those 118 traps in a GSX are awesome. Keep up the good work and good luck to ya!!

 

[ShapeGSX]

If you are considering a new turbo these days and you want a 16G, I don't see why you would get a big 16G over an Evo 16G. The price is very close. The Evo 16G flows more air and spools faster, has an exhaust housing that doesn't crack, and is a better design. It is one of those very rare situations where are no downsides.