smoothludey2

I'm leaning towards an F-max kit, but what kind of turbo should i get? size? specs? ball-bearing? I want to make about 250whp with no more than 9 pounds of boost. I'm also thinking about getting a Hondata stage 2b to go with it. What do you guys think?

sloaccord

try doing a search on h22a turbo, h22 turbo, or h22a4 turbo. I guarantee there's a couple posts around here. . . .

The Punisher

I will help you out. But please try to do a search next time. If you are looking for a good quality product, then Fmax would be the way to go. The trim and size of the turbo is matched for your vehicle, so you don't have to worry about that. But if you want to know, I think it is T04E/t3 w/ .63 a/r hot side. The provided turbo is plenty for your setup. They ran 9 lbs just like you want and hit 288 WHP. You wouldn't have to get the Hondata 2b if that is all you want to run. The MF2 fuel management system that comes with the kit is pre-programed for the numbers you want. You could probably tweak on it a little more as you get used to the turbo and want to squeeze out a little more. They also discharged the wastegate into the atomsphere and gained 44 whp instead of using a closed loop system. You can check out drag if you like, but the quality of the kit is not the same, plus it is not a complete bolt on kit. If you are set on getting the Hondata 2b, then get the kit without the MF2 and extra injectors. There is a group buy going on right now for this system, check it out at: https://honda-tech.com/zerothread?id=63681 And if you would like to see dyno runs for the Fmax kit on a H22A4 here is the link at Fmax: http://www.f-max.com/PreludeSys.htm I hope I have answered some of your questions, check out the group buy, there will never be a deal like that again!

gsr*lude

smoothludey2

thx for your help....now i'm wondering what i should do for detonation....get the optional head gasket? Also, some of the parts in the kit i have been hearing that they aren't all that great. Like the wastegate for example, i heard the tial is superior to the deltagate that comes with the kit. Another issue is the map sensor, people keep recommending the missing link. another thing is that i heard these f-max kits run a closed loop system, is this something that i have to modify in order to get an open loop system or am i mistaken?

MiraiZ

The info on the FMAX site is kind of dated...it now comes with a Tial 35mm wastegate with 9psi spring standard

it comes and installs as a closed loop but it can easily modified to be open...easy bolt on/ bolt off operation
Missing link and boost controllers are nice to haves...but not necessary to get this kit in and you car rolling....e-mail me if you wan info on the group buy...




[Modified by MiraiZ, 7:59 PM 9/4/2001]

Arturbo

The Fmax kit looks so good on the prelude. The only problem we had was some of the pipping didnt fit, but seems to be the problem with all the kits. Also, the prelude takes a little longer and harder to install than other vehicles. I do civics, integras anyday but the Prelude is another story. I guess Im to lazy to work on it and I praise those who do their own work on the prelude.

You should get in on the group buy MiraZ is putting on.

art

MiraiZ

heres a good site...plenty of pretty pictures...fmax powered lude!!
http://www.turboprelude.net

DirtyLude

http://www.hondaprelude.to/articles/inst_turbo.html

bgod

more people on this board with mf2 set-ups seem to get better results then the fmu/pump set-up for the h22a's.

smoothludey2

How big is the downpipe for the fmax kit? 2.5"? Is it necessary to upgrade the cat-back as well...i'm currently running a greddy evo with 2.25" piping, but i heard it's ok to leave that on for now. Another issue is what i should do for detonation if i'm not using the thicker head gasket or the MSD system, but i want to run it at 9psi? My motor is completely stock btw. Also, how many degrees colder should i get the spark plugs? 1 or 2? Does the MF2 override the OBD2? cuz i have a feeling that i'm going to get a CEL....

bgod

the cel is bypassed by the check valves. the mf2 is just a fuel controller.

9psi is highly not recommended with no forms of lowering compression, no way of retarding timing or no higher octane gas in a stock h22a.

i did it with my turbo set-up for a couple of runs on the street but wouldn't recommend it.

smoothludey2

would a J&S be enough to guard against detonation? or would the MSD-BTM be a better solution, retard ignition when boost is detected?

The Punisher

If you don't want to pull the Head, then get the MSD. Just retard the timing one degree per lb of boost. You should be alright. With the amounts of boost you are talking of running, I wouldn't even worry about the JS. Get the BTM and you will be fine.

LudeSi-93

I think you should consider a custom kit. The Fmax kits are nice, but their manifold is pretty much *** for the preludes. You should definitely stay away from the drag kits, cause their intercooler piping is way too long and that makes it inefficient. And to make about 250 WHP, that should be fairly easy with an H22A4 considering it already puts out 190-195 crank HP. At 9 PSI of boost with adequate fuel a T3/T4 turbo should be fine. I recommend a T3 turbine section with a stage 2 wheel and a .63 A/R and a compressor section of a T04E 40 trim. You shouldn't go any bigger than that cause then you'll be out of efficiency range at only 9 PSI. And bigger will be more lag. Good luck.

b18bvudoo

Is the turbo that comes w/ the f-max kit the same that comes w/ the drag3 kit for a b18b teg, ie. T04E/T3 46trim/.63AR