Performance Tuning

Forum to discuss all things related to adding performance tunes to the Ford Fiesta ST.
4ST F3D
Turbosmart Boost Reference Adapter
Replies
0
Views
1,293
4ST F3D
4ST F3D
D
Boost reading -10 at idle
Replies
11
Views
5,733
LilPartyBox
LilPartyBox
M
JB4 Fiesta ST
Replies
10
Views
5,006
L
LazyST
ZachRacing
Questions about Dizzy Tune
Replies
11
Views
6,909
Darkflamedesign
Darkflamedesign
ronmcdon
anyone have experience with the peron gtx2860r or 25-550 kits?
Replies
14
Views
6,946
MattM
MattM
K
Purchased used accessport and trying to understand loaded tunes
Replies
2
Views
1,692
4sfed4
4sfed4
The Cuzi
  • Poll
What is your Crank Case Pressure (Vacuum) from WOT?
Replies
0
Views
2,268
The Cuzi
The Cuzi
F
Ford fiesta st 2008 150bhp air induction kit
Replies
0
Views
1,517
F
Ford fiesta st 2008
K
Timing retard under boost? -4 to -6 degrees
Replies
6
Views
2,991
S
Sam4
frankiefiesta
  • Poll
Poll: How many have blown a FiST engine?
2 3 4
Replies
73
Views
70,316
TyphoonFiST
TyphoonFiST
Fordman
Airflow measurement/calculation (Cobb AP3)
Replies
3
Views
2,024
4sfed4
4sfed4
F
Dizzy E40a tune
Replies
17
Views
7,613
F
Feisty Fiesta7
anticon
Has anyone tried the Dizzy E40a Tune w/ 7 psi Wastegate?
Replies
12
Views
6,625
Raziel510
Raziel510
SwissLime
Should I tune for 91 and just run 93 for an extra margin of safety?
2
Replies
36
Views
29,630
SwissLime
SwissLime
G
Stratified crackle tune or DizzyPop?
2
Replies
27
Views
14,571
E
Erick_V
SwissLime
Keeping Ethanol tuning simple. 1:1 ratio E46?
Replies
5
Views
1,971
EnthusiaST
EnthusiaST
B
Stage 2 Cobb OTS
Replies
3
Views
2,782
KnockOff
KnockOff
T
stratified blows my mind....
2
Replies
22
Views
9,137
bustervic
bustervic
358R
Mountune Tune Characteristics or just FiST Characteristics
2
Replies
36
Views
10,044
XR650R
XR650R
P
Top tier E85 needed for tune?
Replies
3
Views
3,267
R
Rocketst
drewcrolwey
Coolant Temps Still High After Installing Mountune Radiator
Replies
17
Views
7,358
TemecFist
TemecFist
C
Mountune 215 question
Replies
1
Views
1,507
XR650R
XR650R
LastMK7
No More Tuning From CPE
2 3
Replies
48
Views
11,535
M-Sport fan
M-Sport fan
Cornfedfiesta
Chasing wandering afr...
Replies
1
Views
1,923
Muldoon
Muldoon
T
So... apprently my engine keeps adding timing regardless of knock detected
2
Replies
20
Views
6,815
T
Thecanadianst
T
Negative corrections on pre-installed maps that come with AP, youre thoughts?
2
Replies
33
Views
7,618
T
Thecanadianst
TemecFist
Boost leak tester
Replies
7
Views
2,737
TemecFist
TemecFist
xxiaze
Post your power ratings!
Replies
13
Views
3,575
Sakel
Sakel
Indyteecee
How bad are my charge temps? Should I get an inter cooler?
Replies
19
Views
6,480
Philld_with_donuts
Philld_with_donuts
N
Need help installing 2j racing cowl intake to 2019 FIST
Replies
8
Views
3,838
N
Nutmeg
T
pro tune or stratified?
2
Replies
21
Views
10,452
M-Sport fan
M-Sport fan
Geebs
E30 tune...maybe
Replies
12
Views
4,079
M-Sport fan
M-Sport fan
Shikari
Stock 2018 Fiesta ST Map - COBB
Replies
1
Views
2,616
Hypergram
Hypergram
G
Defouler or no defouler?
Replies
7
Views
9,041
TyphoonFiST
TyphoonFiST
M
Ethanol Mixing
Replies
2
Views
2,403
Se7eN
Se7eN
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