Finally got the chance to get my car dyno'd. I'd just like to say thanks for the great tune, Al.

 

Is this a 91 oct tune?

 

nope. my car's never seen anything other than 93 except 1 time at the track i threw in some 112

 

looks good

A bit lean in the upper rpm range tbut that may be the way the tail pipe sniffer was inserted in the exhaust

The TQ is low in relationship to whp

The dyno may not be set up properly as far as loading - there are many settings on that DD unit

AL

 

this is a sarcastic thread if you didn't pick up on it. that afr sucks

 

It seems like it is a bit leaner than I set them on the top end of the chart but as I have said before the sniffer placement can sometimes lead to turbulence and an inaccurate reading if it is not sitting in the exhuast tip properly

Remember also that an adjustable dyno can load differently than when you are on the road depending on how much of a loading and ramp up length they are using

When I lat tuned it the car was dead on 11.2 through the entire power band

Also, a mechaical issue such as an exhuast leak, boost leak or mis-installed fuel pump may result in similar conditions

If you have issues with your car it is suggested that you email me so I can assist you rather than posting a "sarcastic" thread

Al

 

is this a custom tune or mail-in?

 

typical, very typical

 

Kevin, what's up with the boost? It only "spikes" to 20, then holds for a while...then creeps to 21 and holds to 5700 before it finally starts to taper. If you notice, the torque curves is almost identical to the boost curve. I saw similar weirdness when my local DD first put me on the rollers and didn't know what load to use. It took them a while to figure it out before I got a proper boost curve.

I don't know why you'd make this thread and just say the AFR sucks. There's a lot more to tuning and analysis than the AFR curve. That is Al's general profile for AFRs with it being leaner on spoolup, then fatter in the mid-range when boost is high and cylinder pressure is high, then leaner again on the top end where the boost has tapered significantly. Yes, this curve goes lean earlier and higher than normal, but you know that Al wouldn't tune it to such an AFR on purpose.

 

about a week before dynoing i had a boost leak test and compression test done. all signs were good. brand new spark plugs (your recomendation) installed roughly 3 weeks ago.

slowcar: custom road tune.

waxthis2005: who was your post dirrected at?

a friend of mine (eshark) on here threw my custom map into his car as he has nearly identical mods and he verified all this about 2 months ago. the dyno from this weekend finally proved it on paper.

anyhow thats fine. blame everything else. the point of this thread was to show your tune to everyone. theres no point emailing you and trying to work something out. you've gotten enough of my money for this life time. you won't be touching my car again.

 

Clay, I respect your opinion probably more than anyone I've talked to on this site so not to be rude but... what do you want from me? First you tell me it's not the tune and I need to get a compression test, a boost leak test, and then stick it on a dyno and go to the track to verify things.

You know very well i've done everything you asked. Compression test = check. Boost leak = check. Went to the track and am doing 109-110.8 traps on pump with a TRE transmission. Then a friend threw my map into his car, told me everything this dyno just said, then finally GOT on the dyno and proved it, and you're still telling me it's not Al's tune. I'm lost. I guess I got a lemon.

 

"theres no point in emailing you and trying to work something out" . . .

In running a business I can only provide normal customer support - if there is a problem I provide free tech assistance to help resolve. If there is a problem with my tuning, (which in my experience has been rare - example one DC trip where my wideband apparently was mis-reading), I re-tune the car for free or do what ever else I can in my powers to correct the situation

With the reflash mapping, the tuning is pretty much set and when things start to change it is usually a mechanical issue of some sort as Clay has suggested the boost and Tq curves do not look right.

I can not read minds and know if you have a problem if you do not communicate that to me so I can take measures to resolve it

Thanks

Al

 

I am more than happy to help you to get to the root of your situation

A good first step would be to list a complete list of modifications

Thanks

 

AMS turboback w/ testpipe
FORGE MBC and BOV
HKS RS intake
LPI upper and lower intercooler piping
Helix o2 housing
Maxford exhaust manifold
GSC 272/272 camshafts
GRE FMIC

edit: forgot Walbro 255 fuel pump and arp headstuds

 

Kevin, my point is that just showing this AFR doesn't mean your tune is bad. Did you think that by seeing this curve that it was making your car slow? I don't know how you came to that conclusion. Yes, the tune may not be optimum for whatever reason, but I don't know how you deduce that the tune is the only culprit or that it's even a culprit at all. I don't see any evidence of the tune causing a 30whp loss - do you? I'm still curious about your boost anomaly - can you explain that? I've never seen such a boost profile on an MBC.

If you look closely at the torque curve, it appears the problem is down low, because your torque is TERRIBLY low for those mods and Al's tuning. Such things are usually related to boost, and there seems to be a boost anomaly as previously mentioned. The tune may also not be good, but there's no direct indicator that the tune is the main or only problem.