Hey guys,

So here's the question, I had my engine tuned at RRev in portland, awsome bunch of guys that work there..

So we pretty much took the stock gsr map and added a % of fuel across the board, did a whole bunch of pulls, lowered vtec switchover quite a bit, and the final result was

169.6HP 145 tq.

ebay intake * no filter * the filter decided to add -6hp... BOO
greddy headers *not so great
greddy sp2 exhaust
high flow cat * i think...

anyway notice at the end of the map it kinda wobbles a bit not sure if that needs more ignition timing at the end although it has 30.50 degrees of ignition timing at 8050 rpm



This is the highcam map, so down to the questions..


is there a forumla or rule of thumb you go by when setting scalers for IAT and adding or subtracting ignition timing? Neptune has this option and i'm pretty sure most decent stand alone systems have this with other features aswell... the Car was tuned at around 65 degrees air temp so I know that value would be the intersection for add 0 degrees.. I notice some knock under part load and high load when IAT is at or over 110 degrees --- so looking for some values to go by here..

Other question, honestly this is the first time ive had a 5 speed car , and that being something like an H22 engine in a EG quite fun, but I did notice how the H22 has very short gearing and since the EG being as light as it is, i notice i can be in 5th gear going 30 mph to keep the engine quite doing this, i hear some knock... so being stupid for a second is this just my driving habits? or should I reconsider tuning or just not being in a high gear going so slow cruising?

the other thing id like to try and polish up would be part throttle ignition advance how much can I really add or safe to add.."kinda an open ended question" humor me i guess..



As for the base map I started with going from gsr 1.8liter to h22 2.2 liter is the ignition advance maps similar? or does the h22 need more ignition advance globally? since we never really messed with the ignition at idle all the way up to part load, only tuned high load, was courious if the maps were similar or the h22 just needed more timing globally to make power.


I know I tend to ask a lot of **** at once while its brewing in my head.

thanks!

--Aaron

 

Concerning your pinging issue... post your low cam table...
Where do you have vtec crossing over at 4800 or 5200 rpms ?

Did you sync your distributor to the ems ?
Have you completed a compression test on the motor ?

 

Hi mtber,

Vtec 4800rpms, seems like it should be lower looking at the dyno output, low cam I'm pretty sure you wanted ignition timing, here it is.

we did a comp test when I got the engine 2 years ago "it has a total of about maybe 600-800 miles on it after I purchased it from HMO motors.


If your the expert, I need to plop in some values in the iat ignition trim page and possibly pull some timing mid range.

what I need to do is honestly get the car nice and hot on one of these hot days and drive around with my habits and take a look at where the ecu is accessing and investigate where timing is possibly too much.

anyway your the expert, lemme have it

--Aaron

 

Aaron,

Try pulling some timing from 873mbar and under on the low cam table.
Leave your base timing values at 15.25
Try vtec at 4500-4700 at wot.

Have you logged your iats to ensure the iat sensor it working properly ?

By looking at your dyno sheet it looks like your motor simply needed to cool down a bit to produce around 173-175whp which would be semi normal for your setup.

 

Good advice.

Also, if your a/fs are good in 5th gear, definitely pull timing in the area on the map where you're hearing the pinging. The timing doesn't need to be aggressive in the cruising range.

 

Alright, so I'll pull lets say 2 degrees from 873mbar to 8200rpm.. even though the timing change will only be effective till i engage my vtec crossover point. so a small rectangular area... on the low cam ignition map. -- right?

HR -- I notice the pinging when I'm lets say in a higher gear 3rd-5th ish around 2k-3krpm when I accelerate part throttle..

Also looking at the 2d line graphs for ignition, they aren't as smooth as I like, It's almost like i need to eyeball it and increase and degrees some of them to make them appear smoother... ... I need to really look at some other ignition cam 2d graphs so I can get an idea of how they should look... I'm not saying I need to duplicate them exactly but an idea of the ignition advance low and high cam map trends if that makes sense.

--Aaron