New Dsm owner, looking for advice

[NickNasty]

New to the DSM community, just picked up a 1992 talon TSI front wheel drive. The car was someone's project car before they ran out of money. The next guy, aka the guy who sold me the car, did a few more mods also. I'm now the proud owner of the project talon, the mods I know or have been told where done. Big 16g turbo, FMIC, After market fuel pump not sure of size, 550 injectors, solid pipe turbo piping all around, after market turbo manifold, big down pipe, 2.5 or 3 inch exhaust piping. all emissions stuff plugged on throttle body, rebuilt motor 4k miles ago, balancing shafts removed, new motor mounts, lightened fly wheel, 400hp rated clutch, after market bov vented to atmosphere, Aem boost gauge. The car has stock MAF and hits fuel cut under WOT I know the stock MAF is a huge issue in a built DSM. My thought was a fuel pressure regulator, wide band, maf conversion box with gm maf positioned after bov or dsm link. My question is whats the best set up for the maf problem when using dsm link 2g maf? gm maf? stock maf? SD set up? What's the best bang for my buck dsmlink or maf conversion box with gm maf?

Thanks for any advice in advance Nick

 

[99ECLIPSEGSXDSM]

Get link and a wideband and first and learn how to tune, or find someone that does. Plus it will help control those 550 injectors that are still being controlled like 450's. Personally I'd go SD, but the stock 2g MAF is good for most builds. Also I'd find out what size that pump is and if you don't have one, get a boost gauge

 

[NickNasty]

Is there any way to tell what the pump size is without an extensive amount of work, I plan to take a look at the wiring to ensure its 10 gauge and getting 14V when I get some free time. I have a boost gauge already, will 2g MAF work for a big 16G at WOT or will I still have fuel cut issues? From my under standing the stock MAF can read up to 450cfm on a first G, and the reason I'm hitting fuel cut is due to the extra air flow produced from the 16G. I'm pretty sure I read the 2gen MAF is good for 650cfm. This car is not my daily driver, so no rush or need to cut corners.
Thanks For any advice in advance Nick!

 

[TSiAWD666]

Yeah, you open up the tank and look at the pump. It doesn't take that much work.

 

[pauleyman]

Yeah, you open up the tank and look at the pump. It doesn't take that much work.

He's FWD . It's alot more work.

 

[boostdawd]

2g maf or better yet an evo maf will compliment those 550cc injectors if u don't want to buy ecmlink yet.

What I would do.
1. Ecmlink
2. Afpr
3.SD setup
4. Get it tuned or learn how to

 

[NickNasty]

If I do run a evo maf with my set up, is it going to be an issue with my bov venting into the atmosphere. I keep reading this is a big no no on the stock dsm's. I kinda got what I got when I bought the car, so I'm still learning.

 

[boostdawd]

Yea venting to atmosphere will cause problems. Only way u can vent with no ill effects is with a maf translator or speed density both of which get rid of the stop maf.

 

[gdb1039]

Any time you have a pre waste gate (blow off valve) maf you need to recirculate back into the intake. There are many threads about this and why it's a no no. Welcome to the dsm community.

 

[NickNasty]

I was told the car is running a tredstone 255lph hp pump or a tredstone 340lph, so that part of the fuel equation should be fine. The next issue to adress would probably be a fuel pressure regulator and dsm link. Should I skip messing with a gm maf blow through set up, and jump right to a SD set up?

 

[boostdawd]

I would. Less clutter and tuning errors.

 

[Vegas Smith]

Hey Nick, I would do the fuel pump rewire, get an afpr (so that you can control the extra fuel flow coming from the stronger pump), and do the speed density/dsmlink conversion. Brand new the speed density stuff is around $100 and dsmlink around $550. You can obviously get it cheaper used and people are always selling used dsmlink ecus. Your car will run poorly if you are venting your bov to atmosphere. You're also the only person left in the world using a 1g MAS

 

[NickNasty]

Haha I know, bought the car as a project that was un finished 1G MAF is killing me. Do I need to find a way to re circulate my bov back into the system if I run a dsmlink SD set up?

 

[Vegas Smith]

Haha I know, bought the car as a project that was un finished 1G MAF is killing me. Do I need to find a way to re circulate my bov back into the system if I run a dsmlink SD set up?

No. The strength of speed density is it isn't as sensitive to boost leaks and you can vent your bov.

 

[pauleyman]

No. The strength of speed density is it isn't as sensitive to boost leaks and you can vent your bov.

I wouldn't call insensitivity to boost leaks as a strength. Just means the car will run with leaks present as they are no longer affecting read airflow prior to the sensor. If you've got leaks they still affect performance. Bad enough leaks you'll spin the turbo up really hard trying to over come those leaks depending on where you have your wastegate pressure source.