TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

What happens when you max out the stock mass

Thread Tools
 
Search this Thread
 
Old 04-12-2019, 12:05 PM
  #1  
Member

Thread Starter
 
bensbaby's Avatar
 
Join Date: Apr 2008
Location: Smiths Falls
Posts: 446
Received 3 Likes on 3 Posts
Car: 1988 GTA Trans am 1 owner since new
Engine: 383 built
Transmission: 1995 camaro t56 6 speed
Axle/Gears: 3.24 posi 9 bolt
What happens when you max out the stock mass

88 gta tpi
What hp does the mass max out at and when th is happens what does it do when your going wot
And is there anyone who has any way to convert it
To something better
Old 04-12-2019, 12:17 PM
  #2  
Supreme Member

iTrader: (20)
 
Orr89RocZ's Avatar
 
Join Date: Sep 2003
Location: Pittsburgh PA
Posts: 25,748
Received 367 Likes on 296 Posts
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: Strange 12 bolt 3.42
Re: What happens when you max out the stock mass

Closer to 300 whp give or take depending on rpm

Most heads cam intake swap cars will get close if not exceed the program limit

doesnt mean anything bad really, just means the maf is no longer capable of fueling the motor above the 255 g/s limit or whatever. It will still take in more air but the fueling now has to come from enrichment tables vs rpm and open loop enrichments.

easy to work around

edit: if you mean how much can be made thru the 3” maf housing, it would be over 400 whp. It becomes a restriction the higher you go just the air velocity increases alot more. A 3.5” on my 400 whp 383 did not gain anything that i could see at the track
Old 04-12-2019, 01:36 PM
  #3  
Supreme Member
iTrader: (1)
 
GeneralDisorder's Avatar
 
Join Date: Mar 2017
Location: Portland, OR
Posts: 4,255
Received 422 Likes on 323 Posts
Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: What happens when you max out the stock mass

I just got rid of the problematic MAF system by installing the EBL Flash-II from Dynamic EFI.

Besides the tuning difficulties and dangers inherent in the stock MAF limitations - quality replacement MAF's are expensive and getting harder to find. For the cost of a decent MAF you are almost at the cost of going to the EBL system which runs off $10 MAP and IAT sensors that are in stock at every corner parts store.

GD
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jnz28z
TPI
1
08-13-2005 11:14 AM
redbird_400
Tech / General Engine
21
03-18-2002 11:48 PM
Josh 91RS
Tech / General Engine
7
02-19-2001 10:46 PM



Quick Reply: What happens when you max out the stock mass



All times are GMT -5. The time now is 06:46 PM.