Because having a modded car without one is very risky. It should be one of the earlier mods, not the last one you do. We've already seen several motors pop due to fuel starvation in recent months, and form the sounds of it, you're already pretty well modded. I'm not sure how you could get that far without including a fuel pump...

 

There only like a hundred bucks for a kit i have never done one how hard and time consuming are they to do...

 

im running stock fuel pump

 

I don't see 350WHP on a stock turbo at 6000 Feet. Maybe add a lil shot of nitrous, it'll add that 02 your looking for and keep things cool and would get you to that 350 easily if you wan't to retain that stock turbo.

 

[QUOTE=Warrtalon]I agree that it would be extremely difficult to make 350whp uncorrected at 6000'. with all my mods, I only make 300whp.

Warrtalon, is your 300 w/or without Alky?

 

If I can make 303whp on stock cams and a stock turbo....I do not see why it is not possible to make 350whp.

I do understand that the altitude will make a difference, but I truely believe that 350whp on a stock turbo is easily done.

280 comp cams, alky and up the boost, 02 housing, ported exhaust mani, ported stock turbo, full exhaust and full hard pipe intake, fuel pump, flash or a custom tune....you may need to lighten things up a bit....lower pully, flywheel. Do all of this and you can make 350whp rather easlily. Shop around for some used stuff and you will easliy make your 1500$ budget too.

This is the setup a friend of mine has. On race fuel he is around 385whp. Tuning is the key. This is in baltimore though too, and the car was tuned by TT.

 

Good Lord, why do people keep doing this? You are talking about sea level once again. Look, I made 300whp down in the DC area on stock cams, stock turbo, stock intake, stock FMIC, stock piping, stock injectors, stock yadda yadda. I also ran 12.26 like that. However, I am now at 6000' with cams, alky, header, o2, etc, and I only put down 300whp if I crank the boost to 28psi. Just like my 300whp at sea level, I ran a 12.30 this weekend.

So PLEASE STOP talking about how easy it is to hit 350whp AT SEA LEVEL. We already know this...it is a no-brainer. The question is can it be done at 6000'!! What does it take for people to read?

Sparky, yes, this 300whp is on alky. The only mods I can still add are FMIC and LICP.

Tonz of Fun, there's countless threads on the fuel pump install. It's easy, and you can do it yourself. Please get in the habit of searching. The VFAQ is on Evomoto.com.

 

If with all of Warrtalon's mods which include: Ebay O2, Buschur ported manf. and hotside, 264/272's, TBE, SMC Alky kit, BR intake, decat, Dynoflash, @ 28#, expertly tuned SAFC II and etc., they couldnt get beyond 300 WHP @ 6000', then it seems unlikely that it can be accomplished even throwing a lot of money at it.

Even with the addition of a LICP and upgraded BR Race FMIC, Revolver cams and gears, ported and polished Cosworth head, headers, AEM EMS, clipped stock turbine wheel, sheet metal intake, really cold plugs and a tankful of really high octane brew with pure methanol in the Alky kit on the coldest day in December..it still wouldnt be a sure thing.

 

Warrtalon -- While I don't know whether it is or isn't possible to make 350 WHP on a given dyno at 6000 ft ASL, it might be useful to find the highest hp anyone has made on a stock turbo at sea level and then subtract approximately 20% from that number. IMO, this is a reasonably estimation of the maximum hp you can expect to make at altitude.

The reason I believe this is a reasonable estimate is that a maxed-out turbo (i.e., incapable of any more air mass flow, regardless of indicated boost pressure) will respond to changes in altitude almost identically to a NA car, and NA cars lose approximately 20% of their power at 6000 ft ASL.

A good friend in CO has a GVR4 with the typical set of flow mods (although he insists on running a 2.5" exhaust since he believe's it's 97% as good as a 3" given his power level). He runs the Evo III 16G and made 294 uncorrected WHP on an Dynojet dyno at 26 PSI dropping to 24 PSI. Incidentally, this was on a 90+ degree day. Anyway, I mention this since this pull was made in CO and I figure it's another data point for you to consider.

On your 300 WHP pull, did your boost taper significantly as you approached redline?

-Dave

 

Yes, it went from 28psi to 16psi on that pull. In fact, it drops to 16psi no matter what boost level I set it at, and this is using a MAP sensor to log the actual boost when I used to only drop to 22.5psi at redline down in VA. We found this same phenomenon on all the stock turbo'd Evos that got tuned up in Denver. This is part of the reason why I can't make a lot of power, and why my power drops off so much at higher rpms. This is why I have to shift so much sooner at the drag strip now, including a shift to 5th.

Remember, though, that I haven't said 350whp is impossible on the stock turbo. It just would be extremely difficult and quite costly...(without nitrous, that is)

 

With nitrous, it'd be a piece of cake ;-)

Has anyone locally experimented with a stronger WG spring? I believe FP sells one for the Evo. In the past I thought that the stock WG spring caused the dramatic boost rolloff on the Evos, but perhaps this isn't the case given that you were able to hold 22.5 PSI to redline at sea level.

-Dave

 

Couldnt you just wire the WG shut for the dyno run?

 

No, I already have the Forge WGA with red spring that is rated at 19-24psi. I had it when I was at sea level, which helped me to hold my high alky boost more consistently and more strongly. Up here, though, it doesn't seem to make any difference. The turbo simply can't push enough air to sustain that boost, because there's not enough air available. Yes, I've also done multiple pressure tests. The last one I did right before going to the track on Saturday, and the only leak I encountered was through my MBC, which was right at the point where my boost was set (~26psi). This was exactly what I expected. I quickly cranked down the MBC further, and it stopped making noise, and then my IC tester blew off from the pressure, so I'm pretty confident there are no boost leaks.

 

Warrtalon: I was wondering what your AFR's were like on the high altitude dyno runs. Did you have to lean the fuel way out with the AFC? Also, what would your 12.3 ET be when altitude corrected? And, lastly, were you able to resolve the problem with the misaligned camshaft?

 

uhhhh no you didn't.

my friend put down 314 on a dyno dynamics over here in houston and he has turboback, cam's and a 6.5 TME on pump and 340 something on race gas.

i SERIOUSLY doubt you put 353 down on the stock turbo, pump or c16.