fmic question

fc nut · 05-02-2014, 07:56 AM

I installed one on my stockish s5 t2 and the idle dropped to 900 vs 1500 prior to the install. Under stock boost, it goes waay rich, idles irratically. Do I need to upgrade my ecu for it to work properly? When it builds boost, it spikes to 10 and drops to around 8. The wastegate is ported, fd fuel pump, rb turbo back.

RETed · 05-02-2014, 11:32 AM

Sorry, I can't recall what your previous set-up was...?

Stock ECU? N370?

You were running a stock top-mount IC before?

It sounds like an intake leak...

How are you running the BOV?
Stock? Aftermarket?

Pics?

-Ted

fc nut · 05-07-2014, 08:31 AM

My engine has a large street port, stock n370 ecu and injectors, fd fuel pump, aftermarket bov recirculated in stock intake pipe. Before the top mount was replaced, it idled at 1400 with no misses and pulled hard. I did find that I had a leak atound the compression tube. But, around 3600 when building boost,it goes pig rich on the wideband 10.0 and hesitates. I changed the plugs and it still hesitates. I have a greddy manage blue and everyone on here told me not to use it, but no clarified reasons. Its not installed.

fc nut · 05-07-2014, 08:33 AM

***TitaniumTT*** · 05-07-2014, 08:41 AM

That is WAY toooooo many mods to leave a stock ECU in there. Change that. Don't use the greedy emangle. Hell, an Rtek would suffice if you can bare the interface, other than that, perhaps an Adaptronic or a GASP PFC

fc nut · 05-07-2014, 10:14 AM

It looks like my stock ecu was maxed with the streetport. I'll remove the fmic and reinstall the top mount till I can get it sorted out. I really appreciate your input.

***TitaniumTT*** · 05-07-2014, 10:31 AM

There's no need to reinstall the TMIC... make sure everything is as it should be, no leaks,, sensors reporting etc etc etc.... and get an ECU that can be tuned and rock and roll with the bitch

RETed · 05-07-2014, 11:23 AM

I'd still double-check for intake vacuum leaks...
Know how to do that with starting fluid?

Also, how bad of an angle is your stock airflow meter?
From the pics, it looks to be pretty steep...
I would try and keep it at the most 20-degrees off horizontal.

-Ted

fc nut · 05-13-2014, 03:15 PM

I corrected the meters angle, no vacuum leaks now. I know this sounds stupid, but would the engine temp sensor have some thing to do with this issue? When I first start it, the idle is smooth and revs normal. With the fmic it warms up faster and acts up after that. I'm currently using the stock fan. I was thinking of using an efan and adding a lip at the bottom of the radiator, like on the camaros and corvettes. I'm also wondering if I need a vented hood to help cooling. This is my first t2, so please bare with me.

FCFrog · 11-26-2014, 07:59 PM

Anything cooling wise will only help. The vents and the under lip both will only help, if u dont mind cutting into a perfectly good tII hood.

fc nut · 12-19-2014, 03:28 PM

Really? I currently made a lower air deflector,like you find on vettes and camaros to divert air to the radiator. Ive been looking into vented hoods and am considering getting one so the hot air has somewhere to go.

05-02-2014, 07:56 AM	#1
fc nut member Join Date: Jun 2008 Location: Lebanon,Ohio iTrader: (0) Posts: 282 Rep Power: 17	fmic question I installed one on my stockish s5 t2 and the idle dropped to 900 vs 1500 prior to the install. Under stock boost, it goes waay rich, idles irratically. Do I need to upgrade my ecu for it to work properly? When it builds boost, it spikes to 10 and drops to around 8. The wastegate is ported, fd fuel pump, rb turbo back. __________________ leaving my carbon footprint....one start up at a time

05-07-2014, 08:31 AM	#3
fc nut member Join Date: Jun 2008 Location: Lebanon,Ohio iTrader: (0) Posts: 282 Rep Power: 17	My engine has a large street port, stock n370 ecu and injectors, fd fuel pump, aftermarket bov recirculated in stock intake pipe. Before the top mount was replaced, it idled at 1400 with no misses and pulled hard. I did find that I had a leak atound the compression tube. But, around 3600 when building boost,it goes pig rich on the wideband 10.0 and hesitates. I changed the plugs and it still hesitates. I have a greddy manage blue and everyone on here told me not to use it, but no clarified reasons. Its not installed. __________________ leaving my carbon footprint....one start up at a time

05-07-2014, 08:33 AM	#4
fc nut member Join Date: Jun 2008 Location: Lebanon,Ohio iTrader: (0) Posts: 282 Rep Power: 17	__________________ leaving my carbon footprint....one start up at a time

05-07-2014, 08:41 AM	#5
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son iTrader: (4) Posts: 4,581 Rep Power: 10	That is WAY toooooo many mods to leave a stock ECU in there. Change that. Don't use the greedy emangle. Hell, an Rtek would suffice if you can bare the interface, other than that, perhaps an Adaptronic or a GASP PFC __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

05-07-2014, 10:14 AM	#6
fc nut member Join Date: Jun 2008 Location: Lebanon,Ohio iTrader: (0) Posts: 282 Rep Power: 17	It looks like my stock ecu was maxed with the streetport. I'll remove the fmic and reinstall the top mount till I can get it sorted out. I really appreciate your input. __________________ leaving my carbon footprint....one start up at a time

05-07-2014, 10:31 AM	#7
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son iTrader: (4) Posts: 4,581 Rep Power: 10	There's no need to reinstall the TMIC... make sure everything is as it should be, no leaks,, sensors reporting etc etc etc.... and get an ECU that can be tuned and rock and roll with the bitch __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

05-13-2014, 03:15 PM	#9
fc nut member Join Date: Jun 2008 Location: Lebanon,Ohio iTrader: (0) Posts: 282 Rep Power: 17	I corrected the meters angle, no vacuum leaks now. I know this sounds stupid, but would the engine temp sensor have some thing to do with this issue? When I first start it, the idle is smooth and revs normal. With the fmic it warms up faster and acts up after that. I'm currently using the stock fan. I was thinking of using an efan and adding a lip at the bottom of the radiator, like on the camaros and corvettes. I'm also wondering if I need a vented hood to help cooling. This is my first t2, so please bare with me. __________________ leaving my carbon footprint....one start up at a time

11-26-2014, 07:59 PM	#10
FCFrog The Newbie Join Date: Oct 2014 iTrader: (0) Posts: 3 Rep Power: 0	Anything cooling wise will only help. The vents and the under lip both will only help, if u dont mind cutting into a perfectly good tII hood.

12-19-2014, 03:28 PM	#11
fc nut member Join Date: Jun 2008 Location: Lebanon,Ohio iTrader: (0) Posts: 282 Rep Power: 17	Really? I currently made a lower air deflector,like you find on vettes and camaros to divert air to the radiator. Ive been looking into vented hoods and am considering getting one so the hot air has somewhere to go. __________________ leaving my carbon footprint....one start up at a time

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