I apologize if this is repetitive, but I did a search and looks like the first mods list people have for the n/t DSMs is what I already have done. I finally got all my maintenance done and my car running well again (after hours of headaches) and am looking on where to go next. My current list of mods includes:

Main Mods:
DXD Clutch
Ebay FULL Exhaust (4-1 header, resonator in placed of cat, 2.5" N1 Catback)
Onsoku Adj. Cam Gears
Ebay CAI with AEM Filter

Side Mods (kinda mods, but not really):
NGK Iridium IX Plugs
NGK Wires
EGR Blocked off
Rear O2 Removed
Water Temp, Oil Pressure, Volt gauges in pillar

What I'm stuck on now, is that I've done the I/E/H and not sure what to do next. I don't wanna go over on fuel or anything else, because it right now it pretty much stock. I was thinking the 60mm Jeep TB mod, aftermarket intake mani or maybe a walbro 190lph pump, but I'm not sure where to go next. I wanna eventually go turbo, and my funds are kind of limited so I even had though about trying to follow the write-up for a custom turbo kit for less than $1000 and buy parts a few at a time. Any advice on where to go next would be great. Thanks in advance.

I dont have a lot of experiance with the 420a motor but I know its a lot of work to turbo the car. Just a suggestion. Also you could do nitrous maybe a 75 shoot. That would bring your #'s up for cheap. Whats your goals as fare as HP???

talon4lifetsi said:

I dont have a lot of experiance with the 420a motor but I know its a lot of work to turbo the car. Just a suggestion. Also you could do nitrous maybe a 75 shoot. That would bring your #'s up for cheap. Whats your goals as fare as HP???

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If you know a little about the 420A, then you know it is not that difficult to turbo. I question your experience with the 420A seems how you have a 4g63.

Back to OP's question: If you are looking for performance mods, there are some things that you could "add" to the motor, but don't necessarily gain hp. You could go by the guidelines to saving for and buying parts as you go to eventually get a turbo kit together without spending all the money at one time. It is just a matter of self-control. Good luck with the car though!

Well, EVENTUALLY i want to peak 350whp but I am well aware that is QUITE a ways off . I just am looking for some rather inexpensive upgrades (even if they are just small) for now as I plan to start attending the strip come summer time. I know I'd be lucky to break into 16's or 17's, but hey...it's a place to start.

I'm thinking of a 50 shot (maybe a 75, but that might be pushing it) for the track, but the problem is the cost that I don't have now (will when I get my economic stimulus check come May).

eclipsers-t said:

there are some things that you could "add" to the motor, but don't necessarily gain hp.

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What are some of these things you are referring to? You kinda got me interested...they might be extras that may assist in yielding hp in the end or with my setup, although they don't yield any themselves. Any other ideas?

eclipsers-t said:

If you know a little about the 420A, then you know it is not that difficult to turbo. I question your experience with the 420A seems how you have a 4g63.

Back to OP's question: If you are looking for performance mods, there are some things that you could "add" to the motor, but don't necessarily gain hp. You could go by the guidelines to saving for and buying parts as you go to eventually get a turbo kit together without spending all the money at one time. It is just a matter of self-control. Good luck with the car though!

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As I stated I do own 3 4g63t's and dont have much experiance with 420a motor. Also I fell there is no need to bash me for tryin to offer advise.


OP- NITROUS is giong to be your cheapest way to get hp. The only thing is your motor is going to take a lot of strane from even a 50 shoot. With the stock motor producing 140bhp @ 6000rpm's adding a 50 shoot and with your mods you mite be close to 225 to 250hp. This is still not to close to your goals but much better. If you rebuild and put a larger shoot of nitrous you may make it very close to your goals.


Good Luck!!!!

Have you used this site: 2GNT.com - home I think it would be extremely helpful and have heard wonderful things.

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Yea I'm a member over at 2GNT, but pretty much all they do over there is say "search, search, search" I rarely see advise. The thing is...there is so much information over there, you can't get a zone in on your topic, just around it and they don't see that.

talon4lifetsi said:

With the stock motor producing 140bhp @ 6000rpm's adding a 50 shoot and with your mods you mite be close to 225 to 250hp.

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No way man! I'm nowhere close to pushing that much power unless i run a 100 shot. I haven't dynoed yet, but i know I'd be lucky to be around 160bhp (around 130-140 at the wheels). So adding a 50 shot would get me at most 210bhp (about 170-190 at the wheels). The only true way would be actually run a 1/4 or dyno my car to see exactly what it's capable of rather than guess.

Okay you have two moves you can do right now.....

basic NA mods that can still be done...are like your underdrive pulley, 60mm TB (modern performance or Jeep TB MOD).

But to be completely honest If your plan is to go turbo, I wouldn't bother with any of those until you go turbo (maybe the underdrive pulley, if you really can't hold out).

My two suggestions would be to save save save for a turbo kit, and put one together with a fuel pump, 12:1 FMU and your other turbo accesories. And after you've done that and decide you ready to build that 350whp monster you can decide what engine management you want to go with, (porterfueler or MS come to my mind first)

Or you can step up to megasquirt as a NA participant before you go turbo. That way You can tune the car with the current basic mods that you have, and you will have a platform and knowledge for a turbo project using MS once you save for that.

MS will require a few things to go with it, making it expensive in the short run. (having the box built and shipped will run about 400) plus a wideband. But to get to 350whp your going to need this anyways.

Hello im new here but may beable to assist. You have done pretty much what you can do as far as the basic bolt ons. If you plan on going turbo anything else you buy in my opinion should lean towards helping you in the end. I do not suggest the 190 pump as it isnt enough to flow for a goos turbo set up. You can buy a walbro or a TRE performace both in 255 on ebay for $75 or less. I am using the tre and have had no probs yet. You can actually buy an almost complete turbo set up on ebay for $1000 or real close to it. I paid 1200 shipped for mine and it was all turbonetics and star. I upgraded somethings to meat my expectations but that was me. The 420a is capable of being faster than a stock
4g63 and thats running 9psi on stock internals. You could upgrade to a msd coil awhile and even buy an fmu and a few others to get you going. You can run your stock injectors also on the turbo with no problems. Any way not trying to ramble but i did what you are trying to do and that was piece it together as i had money. I ve had my ups and downs so pm me if you need any other assistance Thanks Roy

No need to change the coil, unless your current coil is faulty. The MSD's output is the same as the factory coil-pack, so isn't really an upgrade. The Screamin' Demon coilpack is an upgrade, but isn't required. The factory ignition system is up to the task.

I wa sonly giving a suggestion to upgrade the coil not because his was bad or anything. If he plans on running boost in the future over 9psi or so it was just to help improve at higher rpms. And i know for a fact that my msd put out a hell of a lot more spark than the factory coil. I pulled a wire with the car running with both coils and there was a big diff in the spark arcing.

Then your old factory coil was failing. The MSD is a stock replacement coil. Both the factory coil and the MSD replacement are wound 77:1 and output 36kV.