Power Goal Req

[Lyle Corpse]

So i have a 98 GSX. I want to make about 300 to the wheels and currently all I have stock piled parts wise is

• Evo 3 16g (genuine MHI)
• VRSF Fmic
• Walbro 400lph fuel pump
• Innovate Wideband
• Evo 9 injectors

I know I still need DSMlink and a Fuel Pressure regulator but I was wondering if there was anything else I needed or if I should be pretty set. I do have ARP headstuds installed as well as a newer headgasket installed along with Gates racing belts

 

[jon95dsm]

There are just a few things I would suggest. You're on the right track already.

1. There's a chance those injectors won't get you quite to 300. I'm running FIC 650s making right at the hp you want and I hit 80% duty cycle on 93 octane. You might consider going for a set of 650s or 750s just to make sure you don't get hung up on fuel delivery.
2. Are you planning on running E85 at any point? If not, the 400lph pump is a bit much for your goals. You can easily make 300 on a Walbro 255 and not have to worry about overrun issues with a 400. Also get a fuel pump rewire kit. A 255 can go further if you give it its own power source. The kit is cheap to buy and easy to install.
3. I don't see a boost controller listed here or on your gsx profile. If you go manual, the Hallman mbc works very well. If you do get DSMLink, you can buy the boost by gear hardware from ECMTuning for less than what a good mbc costs.
4. You'll want an aftermarket BOV. The stock one can't hold more than stock pressure. Make sure to get recirculated unless you ditch the MAF for a speed density setup.
5. Boost gauge.

That should get you to 300 easily.

Cams deserve a mention too though. I have 272/272 cams and thoroughly enjoy them. That doesn't give me much low end at all though and its not necessary to make 300. For some added fun a 264/264 or 264/272 cam setup really opens up the top end for you but won't sacrifice as much mid range power as the 272/272 does.

 

[Lyle Corpse]

There are just a few things I would suggest. You're on the right track already.

1. There's a chance those injectors won't get you quite to 300. I'm running FIC 650s making right at the hp you want and I hit 80% duty cycle on 93 octane. You might consider going for a set of 650s or 750s just to make sure you don't get hung up on fuel delivery.
2. Are you planning on running E85 at any point? If not, the 400lph pump is a bit much for your goals. You can easily make 300 on a Walbro 255 and not have to worry about overrun issues with a 400. Also get a fuel pump rewire kit. A 255 can go further if you give it its own power source. The kit is cheap to buy and easy to install.
3. I don't see a boost controller listed here or on your gsx profile. If you go manual, the Hallman mbc works very well. If you do get DSMLink, you can buy the boost by gear hardware from ECMTuning for less than what a good mbc costs.
4. You'll want an aftermarket BOV. The stock one can't hold more than stock pressure. Make sure to get recirculated unless you ditch the MAF for a speed density setup.
5. Boost gauge.

That should get you to 300 easily.

Cams deserve a mention too though. I have 272/272 cams and thoroughly enjoy them. That doesn't give me much low end at all though and its not necessary to make 300. For some added fun a 264/264 or 264/272 cam setup really opens up the top end for you but won't sacrifice as much mid range power as the 272/272 does.

Yeah, I'm a little skeptical about the injectors but my buddy is giving me them for free so i figured why not, I have considered 750s though. I do wanna run E85 at the soonest next year though. Would the rewire kit still apply for the 400lph pump? And yea I forgot to list a boost controller but I do need to buy one too, should be buying DSMlink within the next two weeks though. I also planned on buying a HKS bov when i buy link so I'll have that covered, currently have some HKS knockoff from the original owner . And I have a glowshift boost gauge and oil pressure gauge from original owner as well

Cams, would you recommend the 264/264 or the 264/272 for the best overall output?

 

[Vegas Smith]

Do the rewire regardless. Get your fuel system in order (afpr, pump, injectors, maybe fuel filter). Start looking into a good suspension too.

 

[Lyle Corpse]

Do the rewire regardless. Get your fuel system in order (afpr, pump, injectors, maybe fuel filter). Start looking into a good suspension too.

I'm talking to some guy selling an Aeromotive 1000 afpr, do you think that would be alright? I had a buddy tell me to go with a 515 kit

 

[Vegas Smith]

Sounds good to me. I have the fuel lab filter and regulator.

 

[jon95dsm]

Yeah, I'm a little skeptical about the injectors but my buddy is giving me them for free so i figured why not, I have considered 750s though. I do wanna run E85 at the soonest next year though. Would the rewire kit still apply for the 400lph pump? And yea I forgot to list a boost controller but I do need to buy one too, should be buying DSMlink within the next two weeks though. I also planned on buying a HKS bov when i buy link so I'll have that covered, currently have some HKS knockoff from the original owner . And I have a glowshift boost gauge and oil pressure gauge from original owner as well

Cams, would you recommend the 264/264 or the 264/272 for the best overall output?

The evo injectors will get you further than the dsm ones but you'll still probably cap out before 300 wheel. If you want to run E85 look at the ID1300x injectors. They are E85 safe and from what I've seen they are about as large as you can go while still having a good idle/cruise tune on gas. The rewire applies to any aftermarket fuel pump you get. Good to hear you have boost and oil pressure gauges already.

Take a look at this link:
http://dsmlink.com/wiki/boostcontrol
You won't need to buy a boost controller if you go this route and you'll have more flexibility.

I'm talking to some guy selling an Aeromotive 1000 afpr, do you think that would be alright? I had a buddy tell me to go with a 515 kit

The Aeromotive 1000 should be enough for a 255. A friend of mine had issues with a 400 overrunning his fpr even with an aftermarket one so you'll want a beast of a regulator if you do decide to stick with the 400. I can't state this as a fact but through talking to people I came to the conclusion that the Aeromotive was less likely to have issues than the FuelLab regulator. I'm sure people could argue both sides on that though. I personally went with Aeromotive.

 

[jon95dsm]

Cams, would you recommend the 264/264 or the 264/272 for the best overall output?

You'll have higher peak hp with the longer duration. But when you go longer you do sacrifice the low end. It all just depends what your overall goal for the car is. If you're favoring everyday drivability and see a good bit of traffic you may choose to go with the 264/264 just because its easier around town. However, I've seen over and over people recommending the 264/272 combo because you get more top end like the 272/272 but it doesn't kill your mid range. If it was me I would pick 264/272 out of those 2 but keep in mind that driving around all the time on 272/272s and a 6 puck clutch doesn't bother me. Those kinds of things do bother some people.

My setup isn't all that different from what you're doing. To give you an idea what the 272/272s are like daily driving, I don't have much acceleration at all unless I use boost to do it. Over 3k rpm is a requirement for me if I want to get around people but I can cruise around in the city without boost. A good friend of mine has a different 2L car with a similarly sized turbo but stock cams. The power before boost is much better on his and its a lot nicer to take around town but I can pull him in a race.

 

[jon95dsm]

I did think of one other thing to look into while the car is down getting work done. Since your clutch is unknown go ahead and pull it out and see what it is and how much life it has left. Check the flywheel for cracks too. Last thing you'd want is to build your dream car then have a worn out flywheel destroy half of the build.

 

[Lyle Corpse]

The evo injectors will get you further than the dsm ones but you'll still probably cap out before 300 wheel. If you want to run E85 look at the ID1300x injectors. They are E85 safe and from what I've seen they are about as large as you can go while still having a good idle/cruise tune on gas. The rewire applies to any aftermarket fuel pump you get. Good to hear you have boost and oil pressure gauges already.

Take a look at this link:
http://dsmlink.com/wiki/boostcontrol
You won't need to buy a boost controller if you go this route and you'll have more flexibility.



The Aeromotive 1000 should be enough for a 255. A friend of mine had issues with a 400 overrunning his fpr even with an aftermarket one so you'll want a beast of a regulator if you do decide to stick with the 400. I can't state this as a fact but through talking to people I came to the conclusion that the Aeromotive was less likely to have issues than the FuelLab regulator. I'm sure people could argue both sides on that though. I personally went with Aeromotive.

Ah alright, I'll look further into injectors then. if anything, I'll end up selling the evo ones and buying something else. But i've heard FIC injectors are all E85 safe. I wanted to try going 750cc because my long run power goal is 450-500 but that's next year. And alright I'll search for the rewire kit.

Thanks for the link!

And alright sweet, I'll end up buying the 1000 from the guy I'm messaging.

 

[Lyle Corpse]

You'll have higher peak hp with the longer duration. But when you go longer you do sacrifice the low end. It all just depends what your overall goal for the car is. If you're favoring everyday drivability and see a good bit of traffic you may choose to go with the 264/264 just because its easier around town. However, I've seen over and over people recommending the 264/272 combo because you get more top end like the 272/272 but it doesn't kill your mid range. If it was me I would pick 264/272 out of those 2 but keep in mind that driving around all the time on 272/272s and a 6 puck clutch doesn't bother me. Those kinds of things do bother some people.

My setup isn't all that different from what you're doing. To give you an idea what the 272/272s are like daily driving, I don't have much acceleration at all unless I use boost to do it. Over 3k rpm is a requirement for me if I want to get around people but I can cruise around in the city without boost. A good friend of mine has a different 2L car with a similarly sized turbo but stock cams. The power before boost is much better on his and its a lot nicer to take around town but I can pull him in a race.

Thanks a lot, you are being a big help! I'll have to think about it a bit more before I decide which set to get.

I did think of one other thing to look into while the car is down getting work done. Since your clutch is unknown go ahead and pull it out and see what it is and how much life it has left. Check the flywheel for cracks too. Last thing you'd want is to build your dream car then have a worn out flywheel destroy half of the build.

i actually just bought a brand new stage 2 clutch from my friend, I forget what brand it is though but i think it was a competition clutch

 

[jon95dsm]

Ah alright, I'll look further into injectors then. if anything, I'll end up selling the evo ones and buying something else. But i've heard FIC injectors are all E85 safe. I wanted to try going 750cc because my long run power goal is 450-500 but that's next year. And alright I'll search for the rewire kit.

Thanks for the link!

And alright sweet, I'll end up buying the 1000 from the guy I'm messaging.

Sounds good. Look over what people are running a bit before you decide. Most of the FIC and ID injectors are E85 safe now. If they aren't its usually the small sizes. 750cc will get you to your 300 goal. For 450-500 you'll need to look closer to the 1100-1300 range.