Am I Not Turbo Enough For The Turbo Club?

[selmerguy]

Well at least the 4G63 has a proper MAF sensor. 420As, as you know, have a MAP that can only read in vacuum. Thus, for the 4G63, the S-AFC is at least modifying the fuel curve throughout both the vacuum and boost ranges, which in my opinion, makes it more effective. For the 420A, it's only modifying the fuel curve under vacuum. Beyond that, it's all the fuel pressure regulator determining how much fuel to add under boost. Hence, the size of the injectors you use are also limited by the FPR you choose.

Correct sir!!!

 

[InfiniteGSX]

V, As to the FPR and alla that, I haven't gone that far just yet. Right now I'm still focusing on getting DP built, intercooler hooked up and the turbo/wastegate/bov/boost controler and gauge hooked up properly. I knew the 550's were overkill, but didn't realize it was that severe for a 420A. My bad. This is why I'm still in the Research stage of this project. Thanks

Selmer, same to you, thanks for the advise! BTW, I'm molding my screen right now. I'm 97gst on MP3car.com

 

[cs82685]

Well since you are going to need some type of fpr, you might as well get the sfmu and see how well you can get the car to run with the 550's and safc you've already got. If you can't then you can sell the 550's get 440's and then determine whether or not you need to keep the safc. That's just what I would do though, unless of course you were thinking something else along the lines of MSnS or Portfueler. Good luck.

 

[selmerguy]

Well since you are going to need some type of fpr, you might as well get the sfmu and see how well you can get the car to run with the 550's and safc you've already got. If you can't then you can sell the 550's get 440's and then determine whether or not you need to keep the safc. That's just what I would do though, unless of course you were thinking something else along the lines of MSnS or Portfueler. Good luck.

You will have no problem with the 550's if you buy a sfmu. You can turn down the fuel pressure at idle and have the right ratio for the rising rate.

 

[InfiniteGSX]

So instead of the AFC, I should just get a SFMU and FPR?

 

[selmerguy]

If you allreeady have the safc keep it and buy a SFMU. Regardless you will need a SFMU for those injectors unless you go MSNS or some other "standalone"

 

[VelocitàPaola]

The S-FMU is a type of FPR... but yes, you'll at least need the S-FMU. Whether or not you keep the S-AFC is up to you.

 

[InfiniteGSX]

I haven't goten the AFC yet. I was about to buy it today from another DSM Buddy localy. And I dont necesarily have to use the 550's. I've just had them in the garrage layin around for some time now. They were supposed to go in my 86 Fiero GT but that project was crushed... literatly, and physicaly! I should have an extra 500 to spend on the RS today so help me out here. What works well/good/damn good on these cars. I have to spend 150 on the DP. So that leaves 350. I get around 300-500 every week to spend on this project. And this is called a BudJET project. So I'm trying to go as cheap in price as I possibly can without buying really crapy shit.

 

[VelocitàPaola]

I say 440s and an S-FMU... others may disagree. If you're on a budget, and all of this is just a 'test,' I wouldn't bother with the S-AFC at all.

 

[dr1665]

I say 440s and an S-FMU... others may disagree. If you're on a budget, and all of this is just a 'test,' I wouldn't bother with the S-AFC at all.

You shut your whorish mouth, Paul.


Haha. I totally agree with you on that suggestion. Were the system installed and he were doing the bulk of his experimentation on tuning equipment, I'd advise getting MSnS up and running, but we're still in hardware development at this point, so keep tuning on the simple side, imo.

 

[selmerguy]

If you have the 550's use them. You can pick up a used SFMU for 200 or less all day on 2gnt and other places. You won have any problems with the SFMU and 550's. I think the SAFC is a good thing for this setup. The down side to the safc is if you keeop your car long enough you will repmace it with msns or a standalone later. You will get a better tune with the safc sfmu combo. You can run without it but if you got the cash it looks cool and will function well for your current setup. But....You are probabkly wont be able to go bigger fuel wise without msns or a standalone. You might get 20 psi out of the 550's. That feels great BTW.

 

[InfiniteGSX]

Oh I know how good 20lbs feels... not in a NT Tho...I've owned 3 Turbo DSM's. A 95 GSX, a 91 GSX and a 90 TSI AWD. Now I just own a 86 Golf GTI and a 95 RS and a 98 GS. But workin on gettin the 98 turbo'd before marrige. And its not that I'm on a budget, but there is a time limit... I'm getting married sometime next year and me and my fiance are saving up so she can have the wedding she wants. So I am kinda in a hurry to get the 98 mostly done cause we might also have a kid and I know that the 98 will be put on hold if that happends. So yeah.

 

[ninjai_ruken]

No kidding it will be put on hold!!! Trust me kids are not cheap, I have a beautiful girl, she will be two in Feb. She likes to help me work on the car. And I cant keep her out of my mini sprint. She always climbs into it and starts acting like shes driving. But I know when she gets older her and I can start a project car togeather wich is bad ass. Good luck with everything!

 

[totaleclipse_05]

You might have answered this already, but are you staying on stock internals? If so, I would just save the 550's for your 98 GS and maybe just pick up some 30 lb injectors or something and an SFMU for the RS. If you are only looking to push like 8 psi, you won't need 550's.

 

[Raph]

You will have no problem with the 550's if you buy a sfmu. You can turn down the fuel pressure at idle and have the right ratio for the rising rate.

excatley sir

 

[InfiniteGSX]

You might have answered this already, but are you staying on stock internals? If so, I would just save the 550's for your 98 GS and maybe just pick up some 30 lb injectors or something and an SFMU for the RS. If you are only looking to push like 8 psi, you won't need 550's.

Ok, here's a little news on both cars. The RS was originaly a nice ricer! Its yellow with graphics! The interior was torn to shit and yeah... So thats why its just my test car. The engine from my 98 GS has 140---k miles on it and at the time it was removed from the GS, it had just snapped a clutch in two! So it was running pretty powerful.

The motor inside of the 98GS came out of a wrecked 98gs that just got a Mitsubishi Crate Motor because the car was still under waranty and the insurance claimed it! The guy got a brand new crate motor (vins match up to everything mitsubishi has told me) and a 40k Trans out of a OZ 99 Eclipse. Suposedly it had a stage 1 clutch but that was a load of bs! I bought the shell of the car with the motor and trans for 800 bucks! His car allready was a very low mileage car. So All the suspension, the doors, and half the interior are from his car! All the brakes and everything. Since I was having some issues with my suspension. I got the GS for free, and you get what you pay for! It broke down soo much! Two Transmissions so far, about 40 front wheel studs!

I plan on for now, turboing both on stock internals. I've been reading up on that other guy pulling 11.09 with a stock block and he thinks he could have pulled a 10.09 because he blew a 2" hole in his intercooler pipes... Thats my inspiration for the GS... But, I dont plan on keeping them stock. I have 2 extra blocks I am thinking about building! The block that is comming out of the 95RS I'm probably going to build first. . . But that will go back into the RS... and the motor that originaly came out of my GS, will be built heavily just so it can take the abuse and daily driving. So That will go back into the GS. I have a total of 3 fully peiced Motors, and one block!

 

[totaleclipse_05]

That guy (Awddynamite) didn't pull the 11.09 on stock block, he did like a 12 something with it stock. The 11.09 was with a built engine and he blew a hole in his coupler I thought. Just clearing some stuff up.

Looks like you have quite the projects coming up haha. Good luck man!

 

[InfiniteGSX]

I thought he said it was all turbo! I dunno, I didn't keep that up to date on everything. Yeah, it was his coupler! Damn, the 45degree coupler I need to get two of for the evo intercooler... 70 bucks a peice!

 

[cs82685]

That guy (Awddynamite) didn't pull the 11.09 on stock block, he did like a 12 something with it stock. The 11.09 was with a built engine and he blew a hole in his coupler I thought. Just clearing some stuff up.

Looks like you have quite the projects coming up haha. Good luck man!

this is true, he ran a 12.4 on stock block, that was also with much better tuning than an sfmu though

 

[totaleclipse_05]

Yeah, he said he was using the Hahn Portfueler with some hours on the dyno as well.

 

[XMasta19]

...you're gonna end up with more than one blown up car if you don't keep reading

 

[ninjai_ruken]

Damn 420A I love it to hate it.............####!!!!!! People make fun of me for it. But once its built I feel so much better. Ok Drunk me is going to bed...I am interested to see what times you get on a stock block. As I have never run one. Just make sure you spend some time on the dyno working out the kinks