Fuel pump and injector help - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Prefabbed Turbo Kits A place to discuss prefabricated turbo kits on the market
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools
Old 07-03-2007, 02:02 PM   #1
Antisaint
Thread Starter
iTrader: (17)
 
Vashthestampede's Avatar
 
Join Date: Feb 2007
Location: Danbury, CT
Posts: 4,659
Total Cats: 54
Default Fuel pump and injector help

Heys guys, I'm going back down to the shop right now and wanted to know a couple things before I fudge **** up.

I have a 1.6 with the greddy turbo, 1.8 injectors, and emanage blue, with the vortech fpr. If I put in just a high flow pump, can I take out the fpr now? Or should I wait until I get these supra 300cc injectors to do that. I thought I read about being able to delete the vortech if i did one or the other, maybe both.

Other thing is I have 2 walbro pumps. I know for a fact that one is the 190hp for 94-97 miatas part # F20000141. The other is a 255 for 94-97, but I dont think its the hp one. I searched the part #GSS342 and only came up with 255, no hp.

So basically, will I be ok with the 190hp, remove the fpr, and then later on install the 300cc injectors? I just need some advice....i get nervous with this **** sometimes....

Vash-
Vashthestampede is offline   Reply With Quote
Old 07-03-2007, 02:53 PM   #2
Antisaint
Thread Starter
iTrader: (17)
 
Vashthestampede's Avatar
 
Join Date: Feb 2007
Location: Danbury, CT
Posts: 4,659
Total Cats: 54
Default

I forgot to mention I also have the RX-7 MAF I will be putting in as well. I guess I'm going to go with my gut, I think I remember hearing more about the 190hp. I guess anything is better than the 17 year old OEM one.

Vash-
Vashthestampede is offline   Reply With Quote
Old 07-03-2007, 03:07 PM   #3
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

dont remove the fpr, you'll still need somewhere close to 90psi of fuel....whatcha need to do is the math in my faq to figure out how much. (keep the 190hp)
Braineack is offline   Reply With Quote
Old 07-03-2007, 04:23 PM   #4
Junior Member
 
Join Date: Mar 2007
Location: Denver, CO
Posts: 50
Total Cats: 0
Default

You can go to http://www.rceng.com and use their injector worksheet to get an idea of what size injectors and what amount of fuel pressure you need at a given Horsepower level.
SMRACER is offline   Reply With Quote
Old 07-03-2007, 04:44 PM   #5
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

depends on your power and power goals. 300 cc/min injectors + emb + a good, working fuel pump should get you to around 200 rwhp. After that you'll need an FMU.
Ben is offline   Reply With Quote
Old 07-03-2007, 04:46 PM   #6
:(
iTrader: (7)
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,281
Total Cats: 2
Default

Vash you need to step up on the injectors man
magnamx-5 is offline   Reply With Quote
Old 07-04-2007, 06:44 AM   #7
Senior Member
iTrader: (1)
 
Join Date: Sep 2006
Location: Hong Kong
Posts: 523
Total Cats: 0
Default

I have pretty much the same set up!

After installed the 326cc injectors while taking out the Vortech AFPR and kept the 190hp walbro.

logged my EMB today.

on 0.4 bar = 6psi @ Max 67% injector cycle

So depends on your goals just as BEN said.
Mimime is offline   Reply With Quote
Old 07-04-2007, 06:48 AM   #8
I'm Miserable!
iTrader: (-1)
 
Join Date: May 2007
Location: West Sacramento Ca
Posts: 948
Total Cats: 0
Default

Ill buy that 190 off ya if you dont use it. or maybe even the other?
Slidin'Miata916 is offline   Reply With Quote
Old 07-04-2007, 02:48 PM   #9
Antisaint
Thread Starter
iTrader: (17)
 
Vashthestampede's Avatar
 
Join Date: Feb 2007
Location: Danbury, CT
Posts: 4,659
Total Cats: 54
Default

That math just made me crazy!!!!! As of my last Dyno run I was making 180hp. That was at 9psi and I was showing a reading of 63psi for fuel. I was hoping with the new pump, and some bigger injectors that I could go to 12psi and get over 210hp. Eventually I want to pump it to 15psi, but I like learning how to drive the car in stages you know.

The plan is 300cc injectors and a dual feed rail. I was hoping that at some point I might be able to delete that fpr. By the way, is FMU a fuel management unit? I’m confused…my emanage blue isn’t good enough to control the fuel?

Slidin….if you want my 255 let me know, I have it, I was going to put it on Ebay, but I’ll hook you up.

Vash-
Vashthestampede is offline   Reply With Quote
Old 07-04-2007, 05:19 PM   #10
I'm Miserable!
iTrader: (-1)
 
Join Date: May 2007
Location: West Sacramento Ca
Posts: 948
Total Cats: 0
Default

Well, I looked up it and I think it is HP. But let me first find out if thats over kill for me or not. what do you think? 1.8 injectors, stock disc in the vortech, IC, and maybe 8psi. is tha tover kill guys?
Slidin'Miata916 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 12-15-2017 09:00 PM
Changing from 460cc to flow force 610cc in diypnp 90 Turbo MEGAsquirt 19 10-19-2015 04:23 PM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 10:30 AM
Walbro 255lph Fuel Pump $50 lsc224 Miata parts for sale/trade 2 10-01-2015 10:17 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 01:55 PM.