S3 225 Remap?

[tshirt2k]

One range colder and a plug gap of 0.7mm is usually needed when remapping for every 50HP. As a guide

NGK BKR7EIX or Denso IK22 are a good choice

[Yohan]

One range colder and a plug gap of 0.7mm is usually needed when remapping for every 50HP. As a guide

NGK BKR7EIX or Denso IK22 are a good choice

Hmm could be on to something going by this thread.

http://www.audi-sport.net/vb/new-a3-s3-sportback-8p-chassis/78192-spark-plug-temperatures-want-them-cooler.html

Quote from that link -

"I appreciate the Bosch OEM plug is cheaper, and had to cope with the running in period of the engine, but it only ever ran with stage 1 Revo and the filter/intake. I was forced to remove these plugs at 9k as they were causing stuttering over 5,500rpm. Changing them fixed the issue which has never returned."

Or on another thread -

"Avoid irridium plugs on chipped cars, the pointy electrodes can cause hot spots and pinking under load.
Try stock NGK platinums, or for big bost go one stage cooler, ie 7s not 6's."

The last post in this link is relevent also.

http://forums.vwvortex.com/showthread.php?3923456-Why-is-colder-better-on-spark-plugs

"These logs were taken back when I had EIP software, and I've seen pretty similar occurrences posted here from people running the original Revo tune. Only difference is the plugs (stock vs NGK bk7eix or whatever they are)





Correction factor logs only show where the ECU had to pull timing to prevent detonation. If colder plugs meant less timing pulled........well, it may or may not add up to 10hp, but you get the idea. "

[tshirt2k]

Although it's a different engine and I had the the colder plugs already (Denso IK22), reducing plug gap had a big affect. I had some misfires and some coil problems. High boost pressures can cause the spark to have a hard time jumping the gap. Reducing plug gap also prevents coil pack failures.

Taken from vortex FAQ.

>Stock spark plugs NGK PFR6Q stock gap .032"

--Common replacements
Autolite 3923
Autolite 3922 (one heat range colder)
Denso Iridium IK20
Denso Iridium IK22 (one heat range colder)
Bosch F7LTCR
NGK BKR7E (Race plug, one range colder)
*avoid BKR7E-11 as the factory gap is too large, .042*

For every additional 50HP over stock, a general rule is:
--1 heat range colder
--gap shrinks by .004
So, a chipped 1.8T would make good use ofa plug one range colder gapped to .028

Reference: From NGK's FAQ: Spark Plug Gap

"Another consideration that should be taken into account is the extent of any modifications that you may have made to the engine. As an example, when you raise compression or add forced induction (a turbo system, nitrous or supercharger kit) you must reduce the gap (about .004" for every 50 hp you add). However, when you add a high power ignition system (such as those offered by MSD, Crane, Nology) you can open the gap from .002-.005"."

[Yohan]

Morning Nick,

At the moment I've got a hotel booked for Friday (tomorrow) night. I'm going on holiday next Wednesday so shall I just shift the booking and pick the car up one week on Monday all going well (the 26th)?

[RTechUK]

Morning Nick,

At the moment I've got a hotel booked for Friday (tomorrow) night. I'm going on holiday next Wednesday so shall I just shift the booking and pick the car up one week on Monday all going well (the 26th)?

Hello M8

Not all the detcans wired up to the engine yeaterday when I found a free slot, when to connect the device to the battery........ which we could not find..lol  In the boot. I had to put a spare battery on charge and put it in the footwell. I will be driving it to work this morning to do a cold log.  I dont think its the plugs as in not under peak cyliner pressures, but I will but mine in there of testing later.


Apart from that we are running 219-222g/s at the top of the rev range, its sooooo smooth and linear and the extra idle speed and torque request and made the clutch pick up loads better.   I just want to be 100% sure that no issues have been caused when the engine ended up side down, just the CF pull worries me at the moment, I will know in an hour or so if its phantom voltage pick up from engine harmonics, or is it an early flame front.  I think the 26th wil lbe fine to collect the car as it will give us chnage to do all the other work with the sterring.

Nick

[Yohan]

Morning Nick,

At the moment I've got a hotel booked for Friday (tomorrow) night. I'm going on holiday next Wednesday so shall I just shift the booking and pick the car up one week on Monday all going well (the 26th)?

Hello M8

Not all the detcans wired up to the engine yeaterday when I found a free slot, when to connect the device to the battery........ which we could not find..lol  In the boot. I had to put a spare battery on charge and put it in the footwell. I will be driving it to work this morning to do a cold log.  I dont think its the plugs as in not under peak cyliner pressures, but I will but mine in there of testing later.


Apart from that we are running 219-222g/s at the top of the rev range, its sooooo smooth and linear and the extra idle speed and torque request and made the clutch pick up loads better.   I just want to be 100% sure that no issues have been caused when the engine ended up side down, just the CF pull worries me at the moment, I will know in an hour or so if its phantom voltage pick up from engine harmonics, or is it an early flame front.  I think the 26th wil lbe fine to collect the car as it will give us chnage to do all the other work with the sterring.

Nick

Ooops, forgot to tell you the battery was there 

That flow seems bloody impressive for the top of the rev range, roughly 275bhp? Sounds like I'm not going to recognise it when I get it back 

No problem Nick, like I said I'd rather you held on to it as long as need be to make sure it is running 100% spot on.

I'll change my booking today and pop down on the 26th (assuming all is going well).

Any RR graphs?

Cheers,

John

*edit* Does it pop and bang and make cool noises now lol?