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400awhp plan let me know what you think!

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DSM_Newblet

DSM_Newblet

10+ Year Contributor
76
0
May 17, 2012
phoenix, Arizona
Hey! Just picked up a 91 Vr4 about a month ago with 93k original for a steal so decided I would build it, go figure. The plan is 400awhp streetable and even, fingers crossed, daily driveable. Well here is a list of the mods, after much research, I was thinking to reach my goal. (excluding maintenance, tranny, tcase, etc. because I have already got those taken care of.) All input, advice, other options, experiences and all around comments are appriciated.

Also keep in mind I will be running e85 as I live right down the street from the pump and love the stuff!
List may be a little out of order, have spelling errors and maybeeven missing some stuff so I appologize in advance, again feel free to comment on anything.

Cams - Crower 272/272
Springs/retainers - Manley single spring and titanium retainers
Fuel pump - rewired walbro 255
AFPR - already have an aftermarket afpr on there not sure what brand, came with the car, but might keep it as it looks to be working properly)
Injectors - FIC blue max low z 1350cc (what do you guys think for e85 on the hx35?)
Ecu management - ECULink v3 full or lite(not sure if running SD or not, suggestions?) with the EPROM
Turbo - Hx35 8 blade with BEP housing (not sure how many psi I will run just yet for my goal, maybe 23-26?)
Exhaust mani - 2g ported
02 housing - MAP 38mm external wastegate recirc to exhaust ( Is this a good size or bigger?)
FMIC - ETS 10inch FMIC kit
BOV - TiAL 50mm Q recirc BOV
MBC - Voodoo MBC
Gauges - Not sure on brand yet, but wideband a/f and boost
Exhaust - No idea need to do more research of what will fit but definately 3inch no CAT

So that's about it for now, somethings may be too much for the goal or not enough so just let me know. I will continue to do more research and add to the list while also considering all input.

THANKS GUYS! :)
 
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Im no e85 pro, but will those injectors be large enough.

Change your fuel filter to something that supports e85 as the OEM one will fall apart.

And why no catalytic converter? 400whp is not nearly enough to be choked by a catalytic converter. Get a high flow one. Makes e-tests easier, makes your exhaust quieter and does that little bit to help the environment.
 
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Just to be safe when pushing that much power I would run it on E-85.

The injectors size is fine for E-85. This setup may cause the fuel pump to be the weak point but it should be fine for up to 400 awhp.

For a gauge setup I would recommend either Zeitronix ZT2 or ZT3. It can read afr, boost, oil temp, egt temp etc. Also its possible to log data with Zeitronix.
 
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For the most part that's a very good parts list for 400awhp. I'm running a very similar setup at over 500 ponies. Just a few criticisms and suggestions:

Fuel pump - rewired walbro 255
This could get the job done, but a rewired 400/450 is the E85 guy's best friend.

Injectors - FIC blue max low z 1350cc (what do you guys think for e85 on the hx35?).
Some 1150's would be more than enough and much cheaper. No harm in going overboard with the fuel system, but 1150's would get you to your goal easily.

Ecu management - ECULink v3 full or litenot sure if running SD or not,suggestions? with the EPROM
You can run SD in both either version, Lite or Full.

Exhaust mani - 2g ported
If funds allow, the FP Race manifold is perfect for a bolt-on housing.

02 housing - MAPz 38mm external wastegate recirc to exhaust ( Is this a good size or bigger?)
A 38mm is plenty. But I would highly suggest going with Punishment. They're $100 cheaper than MAP's housing, use a legit Tial wastegate, and are guaranteed for life.

FMIC - ETS 10inch FMIC kit
Extreme overkill. With E85, your not going to need that much cooling efficiency. I'm currently running a Punishment FMIC kit which cost about 1/2 as much as the ETS 10" kit. It has no problem keeping intake temps near ambient, even with my 60mm H1E at over 30psi.

I'd aslo suggest a tank-rail fuel line upgrade to eliminate the restrictive filter banjo bolt. I've never personally found any reason to believe E85 is harmful to the fuel system. I've been use stock fuel filters and lines for years without signs of damage. But that's just my 2-cents.
 
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renovatdkitchen said:
Im no e85 pro, but will those injectors be large enough.
Click to expand...

Absolutely! Im on a single rewired 255 and 1000s making well over 400 wheel on my 7 blade hx35 and e85.

WES_393 said:
I'd aslo suggest a tank-rail fuel line upgrade to eliminate the restrictive filter banjo bolt. I've never personally found any reason to believe E85 is harmful to the fuel system. I've been use stock fuel filters and lines for years without signs of damage. But that's just my 2-cents.
Click to expand...

Just to add to this, I havent found that the stock fuel lines and filter to be any kind of restriction at this power level. Upgraded wouldnt hurt, but its not needed.
 
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Yea, the only upside at 400whp in changine lines out is the cosmetics mainly. If its in budget, i would run new supply and return 6-an nylon braided line.
Go with a wally 450, rewired of course, you will be very happy down the road.
Just go all out on injectors: whatever you can afford. Ideally that would be fic 2150s. EVERYONE wants more power one day. You may be the exception to the rule but i dont think so.

If you have the money the ETS is the best. However you might go with a PR/vrsf kit take the money you saved and get the big ass FICs!! LOL, up to you buddy.

No offense to the second post but dude, get rid of the cat unless its mandatory. Why have it? Whats to GAIN? Nothing obviously. I strongly disagree with the kitchen renovator guy

A 38mm gate is fine. Unless you plan on keeping boost super low i dont know why you would need any bigger of a gate. A bigger gate just helps you maintain a lower boost level and not creep.
 
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Yes, spend the money and get the Walbro E-85 450 fuel pump. Will never have to worry about fuel and it failing. And no need to repeat what everyone else is saying, its all good input.

But you can never have a big enough front mount :). Probably to most, my is way to large. But, ill never have to upgrade again.
 
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I plan on running my 16g to as much boost as it will make and adding a 75 shot to hit 400whp. Keep that spool time down ya know. :)



renovatdkitchen said:
Im no e85 pro, but will those injectors be large enough.

Change your fuel filter to something that supports e85 as the OEM one will fall apart.

And why no catalytic converter? 400whp is not nearly enough to be choked by a catalytic converter. Get a high flow one. Makes e-tests easier, makes your exhaust quieter and does that little bit to help the environment.
Click to expand...

OEM filters will not fall apart. They have been used for tens of thousands of miles without issues.

A catalytic converter is the last thing you want in your exhaust at 400whp, it is absolutely a choke point, and anyone who is running e85 is not seriously environmentally conscience anyways.


WES_393 said:
This could get the job done, but a rewired 400/450 is the E85 guy's best friend.

Unneeded for 400whp IMO.

FMIC - ETS 10inch FMIC kit
Extreme overkill. With E85, your not going to need that much cooling efficiency. I'm currently running a Punishment FMIC kit which cost about 1/2 as much as the ETS 10" kit. It has no problem keeping intake temps near ambient, even with my 60mm H1E at over 30psi.


Agreed. I would go with the VRSF, they seem to have better quality between the two from what I have seen personally.


I'd aslo suggest a tank-rail fuel line upgrade to eliminate the restrictive filter banjo bolt. I've never personally found any reason to believe E85 is harmful to the fuel system. I've been use stock fuel filters and lines for years without signs of damage. But that's just my 2-cents.
Click to expand...


I agree on the stock fuel filter part, but an entire tank to rail kit is completely overkill IMO. Get an AN fitting that eliminates the banjo bolt if you really want, but I'm pretty sure at 400whp that banjo bolt is not yet a restriction.


crash89 said:
Absolutely! Im on a single rewired 255 and 1000s making well over 400 wheel on my 7 blade hx35 and e85.

Just to add to this, I havent found that the stock fuel lines and filter to be any kind of restriction at this power level. Upgraded wouldnt hurt, but its not needed.
Click to expand...

Agreed!



MachineGunSquad said:
Yes, spend the money and get the Walbro E-85 450 fuel pump. Will never have to worry about fuel and it failing. And no need to repeat what everyone else is saying, its all good input.
Click to expand...

Do you have any evidence of a 450 being any more reliable than a Walbro 255? If so, please chime in. If not, there really is no reason for him to spend the extra money when a 255HP will meet his goals without any issues.
 
Upvote0
Well the only thing I can say is the Walbro 450 I purchased is made FOR E-85. So, if you were running E-85 I would like a fuel pump designed for that fuel.
 
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boost97gst said:
No offense to the second post but dude, get rid of the cat unless its mandatory. Why have it? Whats to GAIN? Nothing obviously. I strongly disagree with the kitchen renovator guy
Click to expand...

goodhart said:
A catalytic converter is the last thing you want in your exhaust at 400whp, it is absolutely a choke point, and anyone who is running e85 is not seriously environmentally conscience anyways.
Click to expand...

With 32psi, link estimates me at 500hp, and at 20psi with aggressive timing it estimates 440hp. No real dyno numbers, but my high flow cat has not been a restriction for me.

I just figure a high flow cat is the least we can do to help the environment. (Im no tree huger)

Plus it makes it quieter and if its daily driven and a cop who knows the smell of catless exhaust smells it, you could be in big trouble.


goodhart said:
Do you have any evidence of a 450 being any more reliable than a Walbro 255? If so, please chime in. If not, there really is no reason for him to spend the extra money when a 255HP will meet his goals without any issues.
Click to expand...

The only things I have read about the reliability factor is that the 400/450 (450 being the e85 safe pump) does not whine as loud and does not heat the fuel as much as the 255.
 
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But sorry... the stock exhaust manifold with a bolt on BEP HX-35 along with everything else seems like easiest thing to do. The 460 whp on wastegate (28psi) pressure I make compared to trying to squeeze out 400 whp with basic parts. idk I just have a different mind set...
 
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WOW! Thank you guys so much for all of the advice, did not expect this many posts. Much love! I will
definately be looking into a walbro 450, as for the FMIC I was just going the ETS route because it is the only kit I know made for a Gvr4. But I guess I could always just take the dimesions of that intercooler and find one the same size and make/look for piping matching the ETS kit that also fits. Also going to look into the punishment housing and TiAL set up, and more of your guys suggestions. And I forgot the dudes name but it is a white 91 890/2000 from Tuscon.
 
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IMO i wouldmt go with the BC 272s. They are more like 260s or so. They are cheaper for a reason. Go woth a good cam. Ilike kelford 272s and they are very street tame as well. Good drivability and last.
 
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combs-dsm said:
IMO i wouldmt go with the BC 272s. They are more like 260s or so. They are cheaper for a reason. Go woth a good cam. Ilike kelford 272s and they are very street tame as well. Good drivability and last.
Click to expand...

I've read that KF 272s were monsterous for a 272, much bigger then they actually say they are. Not looking for anything that big. I was either going with BC, FP or HKS, or anything you guys suggest but KFs are too aggressive.
 
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Oh yeah! Would you guys recommend a balance shaft delete for this set up? I won't be going over a 8k rev liimit. Not sure if it will be necessary or not.
 
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Crower 272s might be a perfect fit for you. Or BC 280s. They are 2 different brands btw
 
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Plus it makes it quieter and if its daily driven and a cop who knows the smell of catless exhaust smells it, you could be in big trouble.




not only does e-85 burn cleaner but it smells cleaner than gasoline, i doubt a cop would be paying that close attention to be able to differenciate his car and other cars smell.


edit: sorry i dont know how to do "quotes" yet
 
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boost97gst said:
Crower 272s might be a perfect fit for you. Or BC 280s. They are 2 different brands btw
Click to expand...

I did not realize that, thanks for the information! I will have to check those crower 272s out. I don't want anything bigger then the 272s tho.

UPDATE: Looks like Crower 272s it is, they are a tad bit cheaper plus alot of people are saying that BC is crap and others say they are ok, haven't seen a negative thing about crower yet.
 
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You could also check out dks2 from ffwd
They are regrinds but exact copy of the hks 272.
Check out southbend clutches.
I also suggest to do the bse. I was hesitant before but after looking around I have decided it to be the best option.
 
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DSM_Newblet said:
I did not realize that, thanks for the information! I will have to check those crower 272s out. I don't want anything bigger then the 272s tho.

UPDATE: Looks like Crower 272s it is, they are a tad bit cheaper plus alot of people are saying that BC is crap and others say they are ok, haven't seen a negative thing about crower yet.
Click to expand...

Yeah the Crower 272s are fairly nice on the street for me anyway. I havent taken her past 7600rpm but the power band is def moved sup in the revs over stock. Its not a set of cams if youre looking to make peak power at 7k, that would be the kelford 272 terrirtoy.
 
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