Can i get 225 bhp Gt Jtdm - Alfa Romeo Forum
You are currently unregistered, register for more features.    
Tuning & Upgrades Discuss performance enhancements for your Alfa Romeo

 
Thread Tools
(Post Link) post #1 of 17 Old 26-10-12 Thread Starter
Status: loving my ALFA
AO Member
 
Join Date: Nov 2011
Location: United Kingdom
County: Tyne and Wear
Posts: 860

Member car:

alfa gt jtdm

Can i get 225 bhp Gt Jtdm

Hi I have a Gus remap ,down pipe decated, next on the list a fast road clutch and new DMF.Then looking to fit a FMIC how much more bhp will that give me and will I need to get it remaped to take advantage of the FMIC
300stu is offline  
Sponsored Links
Advertisement
 
Status: -
AO Member
 
Join Date: Jan 2011
Location: Portugal
County: Porto
Posts: 157

Member car:

Brera 2.4 JTD

Well, do you have a way to do logs in your car? I don't think 225hp is possible with stock turbo, but if you can do some air temperature at manifold logs, maybe we can see how much you could gain with a better IC.
exar1711 is offline  
(Post Link) post #3 of 17 Old 26-10-12 Thread Starter
Status: loving my ALFA
AO Member
 
Join Date: Nov 2011
Location: United Kingdom
County: Tyne and Wear
Posts: 860

Member car:

alfa gt jtdm

No dont have the lead or software .Have you a general idea how much gain I would get from a FMIC
300stu is offline  
Status: [URL
AO Silver Member
 
Join Date: Oct 2007
Location: United Kingdom
County: Wrexham
Posts: 1,758
Similar engine same turbo ,no i dont think 225hp is possible with any reliability anyway.
I found the std turbo suffered with boost creep around 180hp decatted, and with fmic and decat id think 200hp-210hp tops but how much psi.
Ive upsized my turbo internally +2mm on turbine and still near boost creep at 2850mb ( hitting 20% vnt means boost creep really)
If serious id go the way of gtb turbo, boost is not a problem then just pick your hp.
I did 191whp last and that was with water methanol aswell.
Already mapped you may notice little difference after fmic fitting, mapped again after you may gain a few hp, as said above you would need to know if your boost temp is hot now, if not you may gain nothing.even at 24-25 psi my temps wernt that high anyway especially with shortish throttle blasts.
If you search jtd fmic im sure i did a few logs pre and post fmic to show gain in maf airflow and i think jsjtd and tribesman and yanko have similar data somewhere on here a nice graph is in there or a gtb turbo thread temps and airflow.

Last edited by sussexa; 26-10-12 at 11:39.
sussexa is offline  
Status: -
AO Member
 
Join Date: Jan 2011
Location: Portugal
County: Porto
Posts: 157

Member car:

Brera 2.4 JTD

I don't know where the IC is on the GT, but I head that on the 147 the IC is nof front mounted and intake temperatures where very high, so on a 147 a FMIC is a must have upgrade. On the GT i don't know.
exar1711 is offline  
Status: [URL
AO Silver Member
 
Join Date: Oct 2007
Location: United Kingdom
County: Wrexham
Posts: 1,758
Here is one of the threads with data before / after
https://www.alfaowner.com/Forum/tunin...16v-gtb-4.html
Is the gt intercooler sandwiched inbetween aircon and radiator?
sussexa is offline  
Status: Suck , Squeeze , Bang , Smoke!
Club Member
Membro Premio
 
Allerd's Avatar
 
Club Member Number: 1723
Join Date: Mar 2011
Location: Netherlands
County: Drenthe
Posts: 770
no it's a smic, like the 156.
the 147 is sligtly smaller
Allerd is offline  
Status: WINNING!!!!
AO Silver Member
 
Singularity's Avatar
 
Join Date: Aug 2010
Location: United Kingdom
County: -
Posts: 2,036

Member car:

Van & astra GTC

Maybe with the latest 170 version. ECU has more tuning potential or something.

Do a search for kendalbeefcake (think that was his name). We had virtually the same car but his went pop!
Singularity is offline  
Status: [URL
AO Silver Member
 
Join Date: Oct 2007
Location: United Kingdom
County: Wrexham
Posts: 1,758
i think that was under 220hp even when turbo went.
i just think the gas flow through turbine would just be overspeeding shaft to high degree with enough air/fuel for 210hp plus.
not to mention high emp and egt cooking turbo also.
as asked will it make 225hp yes,how long will it last not long.
dont forget its probably got the smaller 49mm wheel with 34.6mm inducer also, fancy it will make 2900-3000mbar?
sussexa is offline  
Status: To GTB or not to GTB?
AO Silver Member
 
TribesMan's Avatar
 
Join Date: Nov 2007
Location: Slovenia
County: -
Posts: 2,289
225 is impossible with stock turbo.

Or maybe it is... all you need is very optimistic dyno...
TribesMan is offline  
(Post Link) post #11 of 17 Old 29-10-12 Thread Starter
Status: loving my ALFA
AO Member
 
Join Date: Nov 2011
Location: United Kingdom
County: Tyne and Wear
Posts: 860

Member car:

alfa gt jtdm

So Is it worth upgrading to a FMIC if so what gain would i get, and would i need to remap it again to take advantage of the bigger intercooler
300stu is offline  
Status: To GTB or not to GTB?
AO Silver Member
 
TribesMan's Avatar
 
Join Date: Nov 2007
Location: Slovenia
County: -
Posts: 2,289
FMIC adds around 10-15HP max.

You need to make a new remap for the FMIC, or else the gains will be much lower.
TribesMan is offline  
Status: -
AO Member
 
Join Date: Jan 2011
Location: Portugal
County: Porto
Posts: 157

Member car:

Brera 2.4 JTD

Bigger turbo together with the FMIC are the best upgrades. You should consider the gtb2056, many people here have made that upgrade and have easily reached your target power, you can get even more. After the turbo and fmic, it all depends on the money you want to spend...
exar1711 is offline  
Status: WINNING!!!!
AO Silver Member
 
Singularity's Avatar
 
Join Date: Aug 2010
Location: United Kingdom
County: -
Posts: 2,036

Member car:

Van & astra GTC

Quote:
Originally Posted by TribesMan View Post
225 is impossible with stock turbo.

Or maybe it is... all you need is very optimistic dyno... .
This is very true!!

I had all the mods on mine at one point and attended a dyno shootout type event. I ran a 191bhp which on the face of it seemed very disapointing considering it's the 170bhp version from the factory. But then every other car was running at least 20bhp down compared to runs they've had on other dyno's. One guy ran 215, went to another dyno a few miles away and ran around 245bhp?!

It was a good comparison for me as there were so many other cars running the same day, I think mine came 4th with all those above me having had bigger/hybrid turbos fitted.

Runs can be manipulated also. I noticed the guys doing the runs were touting for business and were trying to say my map was crap etc etc. No doubt I'd give them 300 and it would run a 220bhp

I once went on a dyno in London and it ran 215bhp'ish with standard set up and a crap, smokey re-map. No way was that map as good as the one I had from Alfatune with all the mods fitted.

However, is it really worth spending all this money for all these mods? There were three mods that made a huge difference to performance. Suspension, brakes and a decent re-map. Yes, the FMIC may have helped and yes, the exhaust might have added to it but in all honsety, when it all went back to standard the things I missed the most were the suspension and the brakes! I had W/M injection for a brief moment in time, you could deffinetely feel the difference but the pump seized so I binned the system.
Singularity is offline  
Status: El finto :(
AO Member
 
KendalBeefcake's Avatar
 
Join Date: Mar 2008
Location: United Kingdom
County: Kent
Posts: 886

Member car:

159 SW Ti

Quote:
Originally Posted by Singularity View Post
Maybe with the latest 170 version. ECU has more tuning potential or something.

Do a search for kendalbeefcake (think that was his name). We had virtually the same car but his went pop!
Do I hear my name being taken in vain
KendalBeefcake is offline  
(Post Link) post #16 of 17 Old 31-10-12 Thread Starter
Status: loving my ALFA
AO Member
 
Join Date: Nov 2011
Location: United Kingdom
County: Tyne and Wear
Posts: 860

Member car:

alfa gt jtdm

Thanks for your input Singularity you have given me a lot to ponder.I take your point on it being value for money ,you have to spend a lot to get a small amount. May just leave it as is and have a good holiday that will please Mrs lol
300stu is offline  
Status: WINNING!!!!
AO Silver Member
 
Singularity's Avatar
 
Join Date: Aug 2010
Location: United Kingdom
County: -
Posts: 2,036

Member car:

Van & astra GTC

Quote:
Originally Posted by KendalBeefcake View Post
Do I hear my name being taken in vain


I see your in a 159 now, did you ever sort the GT out?

Quote:
Originally Posted by 300stu View Post
Thanks for your input Singularity you have given me a lot to ponder.I take your point on it being value for money ,you have to spend a lot to get a small amount. May just leave it as is and have a good holiday that will please Mrs lol
Singularity is offline  
Reply

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Tuning & Upgrades

Tags
225 , bhp , jtdm

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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

 
For the best viewing experience please update your browser to Google Chrome