[-G-]

Hello,
Im after some help regarding the above item please guys. Had this fitted a couple of weeks ago along with a bucket full of other mods and ever since I collected my car the tickover has been dodgy as hell to say the least! It even stalls at traffic lights or junctions! Ive already spoken to 1 member on here who comfirms his was the same after fitting the said item. Ive spoken to Lohen and they said it could either be this or infact the car needing to have a remap due to the mods fitted! Im planning on removing the throttle body myself on Sunday and putting the standard one back on to see for sure if its this but I would like to know if anybody else on here has had the same sort of problems with this item before I go ahead.
Cheers
Gregg

[1320autos]

What was all the other mods Gregg.

[-G-]

Quote: Originally Posted by 1320autos (original)

What was all the other mods Gregg.

Alta 15% V2 Supercharger Pulley
Lohen 'The Protector'
Alta 2% Crank Pulley
Alta 5% Alternator Pulley
GRS Chargecooler
Alta V2 Air Intake Kit
Janspeed Manifold & High Flow Cat
Lohen Enlarged Throttle body 64mm
Samco Induction & Coolant Hoses
Magnecor KV85 spark leads
Screamin' Demon Ignition Coil Pack
Denso IK27 Spark Plugs

[1320autos]

I know we had issues with a JCW map, we done back to back test with a std ecu an it was spot on, the owner has had a stock re-flashed into his ecu.

I would go ahead with the Sunday plan, one change at a time

[-G-]

Quote: Originally Posted by 1320autos (original)

I know we had issues with a JCW map, we done back to back test with a std ecu an it was spot on, the owner has had a stock re-flashed into his ecu.

I would go ahead with the Sunday plan, one change at a time

Im in the middle of sorting out the following from Roland @ GT Tuning which hopefuly will be getting fitted to my GP in April / May,
Stage 4 head
Shrick cam
440cc Injectors
AFPR
My plan is to get the car custom remapped after all this has been finished and only if its really needed!

[1320autos]

Why not the Lohen cnc head

Does GTT270 know that you're going make 25bhp more than him

[-G-]

Quote: Originally Posted by 1320autos (original)

Why not the Lohen cnc head

Does GTT270 know that you're going make 25bhp more than him

My goal is anything between the 275 and 295bhp mark, and im certainly not doing it just to beat other members on here
My original plan was to split the mods between Lohen and GT Tuning and Im sticking to it

[1320autos]

Sweet, good luck in your quest.

[MINI-Morgan]

Always good to have focus on exactly what you want! And very deep pockets too!

Not the first enlarged throttle body problem ive heard this week but with that much change in one go i'd give Lohen the chance to try and fix it. Might just be a bad MAP sensor connection or possibly an air leak. Hope you get it all sorted! Its going to be a monster

[GRSmotorsport]

Personally I think its a good to stay with the same tuning company, whether its Lohen, 1320's GTTuning, West Tuning etc, this way the tuner chosen will know your car, going between tuners isn't I feel recommended, because there's a good chance one tuner won't agree with what another tuner has already done to your car - seen this so many times in the passed. But of course the choice is yours

[Johan422]

Your quest for 295 BHP is do-able with the stock supercharger for sure!!

If you serious call Gintani, on the other side of the pond, and they CAN make it happen.

You are going to experience a problem with that large TB until you can get a live tune that can adjust the tables in the ECU to account for more air coming in...with the stock ECU tables it caculates that at a certain position of the TB only so much air is going to pass, now that you have a bored out TB, it's letting more air pass by and the computer gets confused and starts doing silly things. Make sence??? I would encourage you to re-install the stock TB back on until you have the opportunity to get a good tune.

[-G-]

Quote: Originally Posted by Johan422 (original)

I would encourage you to re-install the stock TB back on until you have the opportunity to get a good tune.

Went to get the original Throttle body from the box of parts Lohen gave me back and to my horror no throttle body...... Grrr

[Snowie]

Quote: Originally Posted by -G- (original)

Went to get the original Throttle body from the box of parts Lohen gave me back and to my horror no throttle body...... Grrr

Most companies do the enlarged Throttle Body on an exchange basis - so that they have your old one to bore out for the next customer.

[-G-]

Quote: Originally Posted by GRSmotorsport (original)

there's a good chance one tuner won't agree with what another tuner has already done to your car - seen this so many times in the past. But of course the choice is yours

I totally agree mate because it's already happening with me over Spark Plugs
I just feel GT Tunings Stage 4 head is the better one.
This is obviously just my personal view after reading up about it and the one that Lohen offer

[-G-]

Quote: Originally Posted by Snowie (original)

Most companies do the enlarged Throttle Body on an exchange basis - so that they have your old one to bore out for the next customer.

I did ask to keep all my original parts thou...... Have done with everything so far, Dash, Steering wheel, Tyres, Boot handle
Just incase

[roland2003]

Hi, there is no need to change mapping based on throttle diameter,extreme high boost at the inlet manifold for very low throttle angle will result in P1689......your not going to get that unless you go turbo though, or the bypass valve is wedged shut permanantly! TB related problems that cause idle problems are often down to the machining of the TB bore, the machining and design of the butterfly ,(its diameter and the 'fully closed ' plate angle) , and centralization during assembly. The throttle plate should be at exactly the same angle as stock in fully closed state .With the butterfly held shut and held upto a light, no gaps should be visable around the entire circumference of the butterfly. Basically any gap particularly on an enlarged TB can mean the ECU signal to the TB motor is not able to close the air off enough to achieve required idle speed (in essence the throttle is already fully closed when it should in fact be a 'degree or two' open at desired idle) .The ecu then does weird things trying to reduce the idle, including EML and engine cut . As stated other causes of poor idle and stalling are other air leaks and faulty T map sensors.

Regarding plugs correct heat range for a modded S is B7 (NGK) and IK22 (denso)......most tuners would agree on that. If you need colder plugs then the combustion temps are too high and needs addressing at source

On a seperate note we have another car coming in on a trailor tommorow, apparantly had a conversion elsewhere just done including a remap and yep its gone bang big time.........our advice use stock map + 440cc injectors + GTT adjustable FPR its much safer guys.
Best Regards Roland GTT

[Ant FR]

Quote: Originally Posted by roland2003 (original)

Hi, there is no need to change mapping based on throttle diameter,extreme high boost at the inlet manifold for very low throttle angle will result in P1689......your not going to get that unless you go turbo though, or the bypass valve is wedged shut permanantly! TB related problems that cause idle problems are often down to the machining of the TB bore, the machining and design of the butterfly ,(its diameter and the 'fully closed ' plate angle) , and centralization during assembly. The throttle plate should be at exactly the same angle as stock in fully closed state .With the butterfly held shut and held upto a light, no gaps should be visable around the entire circumference of the butterfly. Basically any gap particularly on an enlarged TB can mean the ECU signal to the TB motor is not able to close the air off enough to achieve required idle speed (in essence the throttle is already fully closed when it should in fact be a 'degree or two' open at desired idle) .The ecu then does weird things trying to reduce the idle, including EML and engine cut . As stated other causes of poor idle and stalling are other air leaks and faulty T map sensors.

Regarding plugs correct heat range for a modded S is B7 (NGK) and IK22 (denso)......most tuners would agree on that. If you need colder plugs then the combustion temps are too high and needs addressing at source

On a seperate note we have another car coming in on a trailor tommorow, apparantly had a conversion elsewhere just done including a remap and yep its gone bang big time.........our advice use stock map + 440cc injectors + GTT adjustable FPR its much safer guys.
Best Regards Roland GTT

You know what the cause of the new wrecked engine is. Not oil pump or anything is it?????

[roland2003]

No not oil pump , detonation.....top end of engine pistons probably.

[Ant FR]

Ouch, Thats gotta hurt more.

least mine was just down to sods law and bad luck. But must hurt more if its down to a tuners handy work ( or not so handy as the case may be) Sounds like somebody has been mapping to get those extreme extra BHp ( for headline Figure) and skimping on the extras to protect the engine.

Adds to the old moto of you get what you pay for.

Hope you can post up ( if owner is cool) pics and finding once stripped down, should serve as a warning to others.

[Jove]

Quote: Originally Posted by Ant FR (original)

Ouch, Thats gotta hurt more.

least mine was just down to sods law and bad luck. But must hurt more if its down to a tuners handy work ( or not so handy as the case may be) Sounds like somebody has been mapping to get those extreme extra BHp ( for headline Figure) and skimping on the extras to protect the engine.

Adds to the old moto of you get what you pay for.

Hope you can post up ( if owner is cool) pics and finding once stripped down, should serve as a warning to others.

The problem is i bet they payed alot!!