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Tech Guide - DSMtuners

VFAQ Site - Visual Frequently Answered Questions

http://members.shaw.ca/costall/ECUprimer/

What kind of fuel is one question? And high compression and boost are not very friendly to one another on a large turbo. So you may want to consider a stronger head gasket of sorts. Tuning also is a key factor. There is a lot of information that the search bar will help you with.

Welcome to DSMtuners!

Another site to help you out:
Talon, Laser, Eclipse 1G Info DSM

My build has 9.2-1 CR and its awesome, I'm also stroked using the S256, it's amazing so what your wanting is very doable. What EMS will you be using, I am using the AEM EMS V1 and I love it too. I think the right ECU choice will make your compression and turbo choice work great. A good cam will help too but remember, once you get a big cam your mileage will suffer. Good luck!

One other thing to remember is big power will require a good clutch, look into the OS GIKEN R2CD for EVO 1-3 it's the best all around choice out there!

It would be 93 octane as I get 10 cents off due to my job so it would almost be the same price as 89 but race would be best I know.

I was thinking just some DSM Link and what cams would you recommend I was thinking 274s but I don't know for sure.

Link is always a great addition, keep in mind fuel oem pump doesn't cut it.

Good luck man

The 35r is a bit large for just 400hp not to mention expensive. You should look into a Holset HX35 as they go for around 350 last I was looking at possibly getting one. The HX35 can make more power than 400hp as well, not to mention the fact that they spool up very quickly for their size.

gusu said:

The 35r is a bit large for just 400hp not to mention expensive. You should look into a Holset HX35 as they go for around 350 last I was looking at possibly getting one. The HX35 can make more power than 400hp as well, not to mention the fact that they spool up very quickly for their size.

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+1 For the Holset Hx-35 Turbo for the power goals.. It is the faster spooling Turbo for it's size, seeing boost as early as 3200 RPM, and reaching full boost by 4200-4500 in most cases, not to mention these turbos are better with a higher compression motor such as what your planning on building.. they're extremely reliable (If Genuine) And on the cheaper side to buy, or rebuild if by some chance you do find one pretty messed up.. Running an proper oil setup on these turbos is pretty important which is why I would recommend looking into our Holset Turbo's FAQ! For more Info about these Turbos If your interested..

As for Cams, I would suggest a good set of Kelford or HKS 272/272 Cams Theyre pretty dead on for what your goals are.. Those would be the most commonly used cam size for our DSM's..

Don't forget about a good fuel setup as well.. Higher Flow Fuel Filter, A good AFPR, Wally 255 HP Pump should be more then adequate for your HP goals on Pump Gas, as well as a Fuel Pump Rewire, and IMO 1200 CC Injectors MIN for the size of the Turbo your going to have to run to get to that 400 HP mark..

Stock Fuel Rails can support an amazing amount of HP so you wont need to worry so much about a fuel rail so that's 1 good thing..

I agree with everything Blair said, except the cams. I wouldn't go for kelford these days. I have heard the quality has gone down in the past two years. I didn't believe it because I have used and liked them before, but I just saw one snapped in half on the buschur fb page.

Definitely go with hks.

I'm pretty sure the stock fuel rail is good for 600 hp or so?

Blaiize, I hate auto correct

welcome to the wonderful world of DSM. Let me ask you some question. How experience are you with engine building? Turbo cars? Mechanical skill? If you have low to no experience on engine building and turbo I would highly recommend start building your car with stock parts and learn how DSM works. Make sure your car moving parts and electronics are in good condition before you spend thousands of dollars on race built. Get a stock 6 bolts from the vendors section so you can feel more comfortable with the car and then later on down the line you can start building high power engine. Just my two cents.

gusu said:

The 35r is a bit large for just 400hp not to mention expensive. You should look into a Holset HX35 as they go for around 350 last I was looking at possibly getting one. The HX35 can make more power than 400hp as well, not to mention the fact that they spool up very quickly for their size.

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Okay I will look into it, I was told by street tuned motorsports that I would probably need a GT35r

Blaiize said:

+1 For the Holset Hx-35 Turbo for the power goals.. It is the faster spooling Turbo for it's size, seeing boost as early as 3200 RPM, and reaching full boost by 4200-4500 in most cases, not to mention these turbos are better with a higher compression motor such as what your planning on building.. they're extremely reliable (If Genuine) And on the cheaper side to buy, or rebuild if by some chance you do find one pretty messed up.. Running an proper oil setup on these turbos is pretty important which is why I would recommend looking into our Holset Turbo's FAQ! For more Info about these Turbos If your interested..

As for Cams, I would suggest a good set of Kelford or HKS 272/272 Cams Theyre pretty dead on for what your goals are.. Those would be the most commonly used cam size for our DSM's..

Don't forget about a good fuel setup as well.. Higher Flow Fuel Filter, A good AFPR, Wally 255 HP Pump should be more then adequate for your HP goals on Pump Gas, as well as a Fuel Pump Rewire, and IMO 1200 CC Injectors MIN for the size of the Turbo your going to have to run to get to that 400 HP mark..

Stock Fuel Rails can support an amazing amount of HP so you wont need to worry so much about a fuel rail so that's 1 good thing..

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Okay thanks, what about GSC cams?

meiko24169 said:

I agree with everything Blair said, except the cams. I wouldn't go for kelford these days. I have heard the quality has gone down in the past two years. I didn't believe it because I have used and liked them before, but I just saw one snapped in half on the buschur fb page.

Definitely go with hks.

I'm pretty sure the stock fuel rail is good for 600 hp or so?

Blaiize, I hate auto correct

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I have heard that there are many parts on the DSMs that are pretty darn good and are not needed for upgrades depending on how much power you want.

cianfar said:

welcome to the wonderful world of DSM. Let me ask you some question. How experience are you with engine building? Turbo cars? Mechanical skill? If you have low to no experience on engine building and turbo I would highly recommend start building your car with stock parts and learn how DSM works. Make sure your car moving parts and electronics are in good condition before you spend thousands of dollars on race built. Get a stock 6 bolts from the vendors section so you can feel more comfortable with the car and then later on down the line you can start building high power engine. Just my two cents.

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I have only really messed with lawnmower engines, and I have worked on my panther a little. I haven't done much with turbo cars, my mechanical skills are pretty good, I am also buiding those that is pne reason for this build. My car is in great shape because it is a 1 owner (my mother) and has 81000 original miles and it actually did have ECU replaced due to water causing it to fry. And for the getting another engine I have thought about it but due to my ability to take my tiem it isn't a big cocern and I have connections with people that can help me if I need it. I am going to try to finish it by November so I can surprise my car club with a quick dsm when all I have now is a stock panther with subs, but that will change too.

If anyone has some other turbo suggestions let me know.

Oh also the 400 hp would be for street use, for the strip I would increase boost to get it to 500+.

And for the trans should I go through sheptrans or should I get a jack trans rebuild kit? I am leaning towards the sheptrans rebuild because they same very nice and have a great reputation.

Thank you all for your input and assistance.

arprez said:

Link is always a great addition, keep in mind fuel oem pump doesn't cut it.

Good luck man

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Yeah I have heard it is quite bad for the vehicle I was loooking at the Walbro 225 or whatever the model is, I have heard many good things about that.
Thanks.

The Wally 255 is pretty much a staple in the import community. It is in every build you will find from 220 hp-600hp, good product.

The gt35 is a great turbo. I have one on my talon and I love it. Two problems with it, it's EXPENSIVE and it is slow to spool up. It can be street able and it's definitely traceable, just depends on the tune.

If your changing cams I would choose GSC S1 cams. Greg at GSC has the latest in design and technogy. I have had too many walbro pumps fail in my supra, I use the Areomotive 340 it'll be the last pump you buy. 1200 CC injectors it way too big, if you want a good idle and never plan on going E85 then I suggest FIC 850's I make 510AWDHP with 850cc no problem and FIC has a low cost rail and injector kit. For a no lag turbo that exceeds your goal I suggest an S256 with DSM .55ar external waste gated.

glad to see people take care of their old DSM good for you man!! I wish mom give me an old DSM with original miles. As for turbos you should try FP Turbos since you'll be using for Street/Strips and It's way cheaper than 35R for the whole setup.Diamond Star DSM Ball-Bearing Turbos For Sale - Forced Performance Turbochargers | FP 68 HTA, GT3582, GT3586, Red, Green Turbo

meiko24169 said:

....it's EXPENSIVE and it is slow to spool up. It can be street able and it's definitely traceable, just depends on the tune.

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How slow are we talking for spool up?

Rocketman1000R said:

If your changing cams I would choose GSC S1 cams. Greg at GSC has the latest in design and technogy. I have had too many walbro pumps fail in my supra, I use the Areomotive 340 it'll be the last pump you buy. 1200 CC injectors it way too big, if you want a good idle and never plan on going E85 then I suggest FIC 850's I make 510AWDHP with 850cc no problem and FIC has a low cost rail and injector kit. For a no lag turbo that exceeds your goal I suggest an S256 with DSM .55ar external waste gated.

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Are the S1's going to be enough?
Oh okay, thanks.
Yeah E85 in my area is very difficult to get and my work doesn't offer it so I wouldn't get a discount on it.
Where would I be able to get one of those turbos?

cianfar said:

glad to see people take care of their old DSM good for you man!! I wish mom give me an old DSM with original miles. As for turbos you should try FP Turbos since you'll be using for Street/Strips and It's way cheaper than 35R for the whole setup.Diamond Star DSM Ball-Bearing Turbos For Sale - Forced Performance Turbochargers | FP 68 HTA, GT3582, GT3586, Red, Green Turbo

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Yeah it needs some TLC like windshield needs to be resealed, and due to that some water has gotten into the interior and caused some issues, but all and all it is in really good shape. Haha yeah that is one of the best things I have gotten from anyone and will probably be the best in my entire life.
Okay thanks I will look at them again.

If your looking to make a quick 350-400awhp I can give you my set up..I'm making 420awhp on e85

The gt35 is a large turbo! Especially for a 4cyl. My motor is stock. New rebuild, but all oem parts, valves are same size.. Etc.. Where a 16 g is spooling up and hitting target boost under 2g rpm... My gt35 isn't hitting target boost until closer to 4g.... Saying that, as soon as I hit target boost, in my case, about 12psi, I am walking all over everything. I wouldn't use something like a ht35 for auto x or anything of that nature. I wouldn't even use it on a 8th mile track. You want it for a longer stretch.

My buddy has a cammed evo 8 with a 16g turbo pushing 30lbs (ticking time boMb) and he walks on me till I hit third and murder him.

Bshep834 said:

If your looking to make a quick 350-400awhp I can give you my set up..I'm making 420awhp on e85

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Nah that is alright I do not have the ability to get all of the parts at once

meiko24169 said:

The gt35 is a large turbo! Especially for a 4cyl. My motor is stock. New rebuild, but all oem parts, valves are same size.. Etc.. Where a 16 g is spooling up and hitting target boost under 2g rpm... My gt35 isn't hitting target boost until closer to 4g.... Saying that, as soon as I hit target boost, in my case, about 12psi, I am walking all over everything. I wouldn't use something like a ht35 for auto x or anything of that nature. I wouldn't even use it on a 8th mile track. You want it for a longer stretch.

My buddy has a cammed evo 8 with a 16g turbo pushing 30lbs (ticking time boMb) and he walks on me till I hit third and murder him.

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Okay thanks.
Ha I am not too big an evo fan just because everyone expects them to be quick