Dynamometer Results & Comparisons - 228R results

My injectors were almost maxed out and i'm wondering if i left quite a bit on the table due to it??? My car is an LS1/A4 with ported 243's, LS6 intake, LT's, 3in y dumped, cold air kit, 228r cam and a yank 3600 stall.

This was on a dynocom dyno. I was told that it typically gives lower numbers than a dynojet.

Yeah that seems a little low. I am getting ready to do nearly the same combo.

Out of the average head cam autos I see its low but could be the dyno. Take it to the track see what it does. Try another dyno.

My injectors were almost maxed out and i'm wondering if i left quite a bit on the table due to it??? My car is an LS1/A4 with ported 243's, LS6 intake, LT's, 3in y dumped, cold air kit, 228r cam and a yank 3600 stall.


if you plan on doing more stuff to it you will need injectors, and the fact that they are almost maxxed out, it wouldnt hurt.. but no you will not see more gains on the dyno with bigger injectors if you already have your tune.
THe dyno #'s do seem a bit low but you're also A4.. besides, the dyno is just a tool.
as long as it is running strong

The stock injectors should be maxed out in a A4 car with a setup like that.

So if I swap the injectors and get it retuned will there be any gains? I can get a set of 36Lb injectors for cheap.

If it maintained proper air fuel, then no you wont see gains. However, if it leaned out on the top end, then yes you might see gains. There is no air fuel reading on you dyno, so it's rather hard to tell..

But, if the injectors are maxed or close to it, bigger injectors would help me sleep better knowing there is less chance of it going lean and melting things down.

I'm going to check to see if I'm losing fuel pressure up top tomorrow and go from there. I will end up doing bigger injectors anyway because I plan to do a stroker kit.

was the converter locked or unlocked? and how extensively were those 243's ported?

The 243's flowed 300cfm and I think it was unlocked

The 243's flowed 300cfm and I think it was unlocked

300 cfm??:eek2:

If the car was breaking up at the top end you might pick up a little. However with that combo it is very close to being accurate. On stock bottom end LS 1/2/6 heads and cam combos do not make 500hp + at the wheels like everyone claims. Generally speaking with that HP and TQ that should be good for getting the car into the 11's.

I'm very happy with the way the car drives and feels. I just wanted to see If the numbers were off and what I could do to get them up.

I just had my ls2 tuned yesterday. vrx5 cam, underdrive pulley, kooks 17/8 headers, ortaci intake, trickflow 220 as cast heads,yank ss3600 and my injectors was maxed out also. Made 444rwhp.

So I threw a fuel pressure gauge on the rail and checked. I have 70lbs at idle and at WOT it drops to 50lbs. What would be the downside of this happening??? This is a converted 94 camaro and I'm pretty sure it doesn't have a regulator.

That would make it rich at idle/part throttle and leaner at WOT.

im no expert but it seems pretty close to me. unlocked converter, A4, and injectors going static lol. Corrected dyno numbers im assuming? and how much timing?

So would this cause me to drop power up top?

What was AFR in the higher rpms?