Performance Tuning

Forum to discuss all things related to adding performance tunes to the Ford Fiesta ST.
M
Increase low RPM torque?
Replies
17
Views
5,627
S
SlowDunny
Z
Cobb OTS Stage 2 tune vs Custom tune???
Replies
7
Views
5,203
X
Xaendeau
R
Cobb OTS stage 1 91 time and E85 mix???
2
Replies
25
Views
8,112
danbfree
danbfree
BoostBumps
DiabloSport Now Supports Fiesta ST
2
Replies
30
Views
14,828
M-Sport fan
M-Sport fan
Jadar
Choosing Tune and Mods Question?
2
Replies
20
Views
5,638
B
bradktn
citru_ST
What tune should I buy
2
Replies
26
Views
6,186
danbfree
danbfree
danbfree
Just how accurate is the AP's reported "estimated" HP/torque numbers?
Replies
13
Views
7,787
danbfree
danbfree
J
Where did you get your Cobb AP?
Replies
6
Views
1,503
T
Truth in Ruin
LuvPug
Cobb officially supports '18 models
Replies
2
Views
2,107
LuvPug
LuvPug
E
I went Catless for free this weekend lol
Replies
7
Views
2,283
E
Erick_V
apex1
FMIC really necessary?
2 3
Replies
48
Views
17,181
A
alexrex20
RubenZZZ
Would a AP3 from a Focus ST have the OTS maps for a Fiesta ST?
Replies
11
Views
3,600
R
redmoe
triplegriff
Ignition Correction
Replies
1
Views
3,337
jtehh
jtehh
F
Fiesta st bov resistance
Replies
0
Views
1,436
F
fiestaST3
V
How do I find the right tune and/or professional tuner for my car?
Replies
7
Views
2,096
B
Bizzareo
J
Cobb AP vs. Mountune AP vs Mountune MP215/230
Replies
12
Views
11,525
HAHAFiST
HAHAFiST
E
Stage 3ish tune
Replies
2
Views
1,163
E
Existentialism
V
Cobb Accessport help !
Replies
2
Views
1,694
L
LITTLEVADER
F
Pro Tunes/Best Tuner??
2
Replies
37
Views
18,218
Speedboosted
Speedboosted
S
Aux fuel and STFT issue - Fiesta ST with big turbo
Replies
0
Views
1,701
S
SneakyPete
danbfree
Cobb OTS tune at ~2500 miles, could I benefit from step colder plugs?
2
Replies
22
Views
12,566
bustervic
bustervic
The_Ryan
Negative Corrections When Gas Tank is Low?? (Stratified 91)
Replies
5
Views
2,594
A7xogg
A7xogg
danbfree
Flowmaster Delta Boost module - 4 psi boost gain for $239
2 3
Replies
55
Views
15,841
danbfree
danbfree
danbfree
Receiving my AP soon with only Cobb OTS tunes, any other free better OTS tunes out there?
Replies
10
Views
3,061
DEss
DEss
Smoke627
Stage 2 tune help
Replies
2
Views
1,690
Smoke627
Smoke627
pwnall1337
I need 17 USDM Fiesta's to log their FFS shifts please to resolve a cobb issue
Replies
0
Views
1,376
pwnall1337
pwnall1337
T
Removing Accessport in Stage3
Replies
9
Views
2,673
XanRules
XanRules
Capri to ST
Stock Air Filter Fit In MP215 Airbox
2
Replies
24
Views
9,325
Z
ZREXER
jeff
JST Performance anyone?
Replies
3
Views
4,012
Woods247
Woods247
The_Ryan
Stratified 91 vs 93
Replies
4
Views
1,899
apex1
apex1
M
Used Accessport question...
Replies
6
Views
4,774
apex1
apex1
F
bluefin stage 2
Replies
13
Views
6,067
D
drg
spdkills83
How many tunes can the Cobb AP hold?
Replies
9
Views
4,373
K
Kalter
kenweise
Innovative Performance Chip
Replies
14
Views
4,505
danbfree
danbfree
S
Is the Cobb cai really worth it??
Replies
3
Views
2,526
me32
me32
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